JIC ELECTRICAL STANDARDS

(1)

JIC ELECTRICAL STANDARDS

NO

NOTE:

TE: THI

THIS

S COP

COPY

Y OF

OF THE

THE JI

JIC

C ELEC

ELECTRI

TRICA

CAL

L ST

STAN

ANDA

DARDS

RDS IS

IS INT

INTENDE

ENDED

D ONL

ONLY AS

Y AS AN

AN

INFORMATIONAL SOURCE FOR TRAINING INFORMATION – if updated information pertaining to

Industrial Electrical Standards are required please refer to NFP

Industrial Electrical Standards are required please refer to NFPA

A 79-19

79-1994 (ANSI) or later.

94 (ANSI) or later. Additionally

Additionally::

Appendix F, Sample Electrical Equipment Data Form has not been included in this copy.

(2)

TABLE

TABLE OF OF CONTENTSCONTENTS E1.

E1. General General ... ...4...4 E1.3

E1.3 DefinDefinitioitions. ns. ... ...4...4 E

E 2. 2. DiagramsDiagrams, , Data, Data, NameplatNameplates es and and IdentIdentificatification ...ion ...4...4 E2.1

E2.1 DiagramsDiagrams. . General General ...4...4 E2.2

E2.2 ElemenElementary tary (Schem(Schematic) atic) DiagramDiagram...5...5 E2.3

E2.3 Block Block and and LogiLogic c DiagramsDiagrams. . ...6...6 E2.4

E2.4 Panel Panel Layout Layout and and InterInterconnconnectioection n Diagram. Diagram. ...6...6 E2.10

E2.10 EquipEquipment ment NameplatNameplates. es. ... ...6...6 E3.

E3. Supply Supply Circuit Circuit DiscoDisconnectnnecting ing Means Means ... ...7...7 E

E 3.3 3.3 RatingRating. . ... ...7...7 E3.9

E3.9 MountMounting. ing. ... ...8...8 E3.10

E3.10 InterlInterlockingocking. . ...8...8 E3.11

E3.11 OperatiOperating ng Handle. Handle. ...8...8 E4.

E4. ProteProtection ction ...8...8 E4.2

E4.2 GeneralGeneral. . ... ...8...8 E4.3

E4.3 Main Main and and Branch Branch CircuiCircuit t OvercurrOvercurrent ent ProteProtectionction... 88 E4.4

E4.4 ContrControl-Col-Circuit ircuit OvercurrOvercurrent ent ProteProtectionction...10...10 E5.2

E5.2 ContrControl ol VVoltagoltage...e... .12.12 E5.3

E5.3 ConnConnectioection n of of ContrControl ol DeviDevices. ces. ...12...12 E5.4

E5.4 Circuit Circuit DesigDesign n and and InterlInterlockinocking...g... ...13...13 E6.

E6. ContrControl ol EquipEquipment ment ...14...14 E6.1

E6.1 StandardStandards. s. ... ...14...14 E6.3

E6.3 MotoMotor r StarterStarters s ... .14.14 E7

E7 ContrControl ol EncloEnclosures sures and and ComCompartmenpartments ts ...15...15 E7.2

E7.2 Size Size DefinDefinitionition... ...15...15 E7.3

E7.3 EncloEnclosures. sures. ...15...15 E7.4

E7.4 CompCompartmentartments. s. ...16...16 E7.5

E7.5 DoorsDoors. . ...16...16 E

E 7.6 7.6 Door Door FastenFasteners. ers. . . ...16...16 E8.

E8. LocatioLocation n and and MounMounting ting of of ContrControl ol EquipmEquipment ent ... .16.16 E8.1

E8.1 General General RequiRequirementrements...s...16...16 E8.2

E8.2 ContrControl ol PanelsPanels. . ...16...16 E8.3

E8.3 ContrControl ol Panel Panel EncloEnclosure. sure. ...17...17 E8.4

E8.4 ClearancClearances es in in EncloEnclosures. sures. ...17...17 E8.5

E8.5 MiscMiscellaneouellaneous s ContControl rol EquipEquipment ment ...17...17 E9.

E9. OperatoOperator's r's ContControl rol StatioStations ns and and DeviceDevices...s...17...17 E9.2

E9.2 Fixed Fixed StatioStations. ns. ...18...18 E9.3

E9.3 ContrControl ol StatioStation n CompComponenonent t ArrangArrangementement...18...18 E9.4

E9.4 ContrControl ol StatioStation n LocatiLocation. on. ...18...18 E9.5

E9.5 PendanPendant t StatioStations ns ...18...18 E9.5.1

E9.5.1 PendPendant ant statiostations ns shall shall be be oil-toil-tightight. . ... ...18...18 E10.

E10. ElectriElectrical cal AcceAccessorissories es ...18...18 E10.1

E10.1 Plugs Plugs and and ReceptReceptacles. acles. ...18...18 E10.2

E10.2 WWork ork LighLights...ts...18...18 E11.

E11. ConduConductors ctors ...19...19 E11.3

E11.3 CondConductor uctor AmpAmpacity acity ... ...19...19 E11.4

E11.4 ElectrElectronic, onic, PreciPrecisionsion, , Static Static and and SimilSimilar ar ContControl. rol. ...20...20 E12.

E12. WiriWiring ng MethMethods ods and and PracticPractices es ...21...21 E12.1

E12.1 General General RequiRequirementrements. s. ...21...21 E12.2

E12.2 ElectElectrical rical ConnConnectioections. ns. ...21...21 E12.3

E12.3 Panel Panel WirWiring ing ...21...21 E12.4

E12.4 EquipEquipment ment WiriWiring...ng...22...22 E13.

E13. RacewayRaceways, s, FittiFittings ngs and and BendBends s ... .22.22 E13.1

E13.1 General General RequiRequirementrements. s. ...22...22 E13.2

E13.2 RigiRigid d Metal Metal CondConduit uit and and FittiFittings. ngs. ...22...22 E14.

E14. MotoMotors rs ...25....25 E14.5

E14.5 SpecSpecial ial CharactCharacteristieristics. cs. ... ...25...25 E15.

E15. GroundGrounding ing ...25...25 E15.1

E15.1 ContControl rol CircuiCircuits ts ... ...25...25 E15.5

E15.5 EquipEquipment ment GroundGrounding ing CondConductoructors s ...26...26 E16.

E16. TestTesting ing ... ...26...26 E17.

E17. Gaskets Gaskets ... ...26...26 App

Appendiendix x A-TA-Typical ypical GraphiGraphic c SymbSymbols ols for for ElectElectrical rical DiagramDiagrams...s...28...28 *A

*Appenppendix dix B—SamplB—Sample e ElectriElectrical cal DiagramsDiagrams...32...32 App

Appendiendix x C-GlC-Glossary ossary of of TermTerms s ...35...35 App

Appendiendix x D-DevD-Device ice DesigDesignationnations s ...39...39 App

Appendiendix x E-ReE-Referenferences ces to to Other Other Codes Codes and and StandarStandards ds ...40...40 App

(3)

JIC ELECTRICAL STANDARDS

FOR

MASS PRODUCTION EQUIPMENT (EMP – 1 – 1967)

FOREWORD FOREWORD TH

THE E BUBUILILDEDERS AND RS AND USUSERERS S of of machmachine ine totools ols andand similar industrial equipment as well as the manufacturers similar industrial equipment as well as the manufacturers of electrical apparatus have long realized that safety of the of electrical apparatus have long realized that safety of the machine operator and maintenance of production are of machine operator and maintenance of production are of cardinal importance in the design and purchase of such cardinal importance in the design and purchase of such eq

equiuipmpmentent. . TTo o fufulflfilill l thithis s rerealalizaizatition on in in the the ararea ea of of equipment electrification, this standard is the latest in a equipment electrification, this standard is the latest in a series which has been issued in

series which has been issued in the last 25 years.the last 25 years.

The first form of the machine tool electrical standards was The first form of the machine tool electrical standards was issued by the National

issued by the National Machine Tool Builders' AssMachine Tool Builders' Associationociation (N

(NMTMTBABA) ) in in 19194141. . The The NMNMTBTBA A ststandandard ard has has bebeenen rev

reviseised d and and reireissussued ed perperiodiodicaically until lly until 1961960 0 whewhen n thethe most recent issue was released.

most recent issue was released. In

In 1941948 8 the the fifirsrst t elelecectrtricical al stastandandard rd fofor r indindusustritrialal equipment was issued by the Joint Industry Conference. equipment was issued by the Joint Industry Conference. The revision and re-issuance of this standard continued The revision and re-issuance of this standard continued until 1957.

until 1957. Whi

While le the the twtwo o stanstandards dards wewere re ververy y simsimilarilar, , the the JoiJointnt Industry Conf

Industry Conference standard erence standard also included also included equipmequipmentent other than machine tools and laid particular emphasis on other than machine tools and laid particular emphasis on maintenance probl

maintenance problems peculiar ems peculiar to the to the mass productiomass productionn industries.

industries. In

In 1961963 3 boboth th ststandandardards s wwerere e in in neneed ed of revof revieiew w andand revision. For this purpose a new organization, the Joint revision. For this purpose a new organization, the Joint Industrial Council (JIC), was formed in order to provide Industrial Council (JIC), was formed in order to provide dire

directiction, on, cocoordiordinatination on and and concontinuitinuity ty of of efefforfort t in in thethe de

develvelopmopment, ent, advadvanceancementment, , and and rereferrferral al to to the the UniUnitedted St

Statates es of of AmAmerierica ca StStandandardards s InInstistitutute te (U(USASASISI) ) of of stan

standarddards s whiwhich ch wiwill ll encencouraourage ge the the safsafe e and and relreliabiablele application of controls to machines and equipment used in application of controls to machines and equipment used in industrial applications.

industrial applications.

Memb

Membership in ership in the JIC the JIC is open is open to interested and to interested and afaffecfectedted companies, associations and organizations that desire to companies, associations and organizations that desire to participate in

participate in the fulfillment of these objectives.the fulfillment of these objectives.

Paralleling the old standards, two new ones have been Paralleling the old standards, two new ones have been written, one for General Purpose Machine Tools and one written, one for General Purpose Machine Tools and one for Mass Production Equipment. These new standards are for Mass Production Equipment. These new standards are intended to be basic in nature; that is. they do not contain intended to be basic in nature; that is. they do not contain any requirements specific to anyone company. division or any requirements specific to anyone company. division or plant. It is anticipated that purchasers using JIC standards plant. It is anticipated that purchasers using JIC standards

wi

will ll alalso so adadd d thetheir ir owown n parpartiticucular lar reqrequiruirememenents ts toto p

pururchchasase e spspececiifificacatitionons s in in orordederiring ng eqequiuipmpmenent.t. Fur

Furtherthermoremore, , the the purcpurchashaser er musmust t clclearlearly y stastate te whiwhichch version he requires adherence to, if either .

version he requires adherence to, if either .

Additional requirements for particular equipment such as Additional requirements for particular equipment such as furnaces, welders. presses. etc., have not been included in furnaces, welders. presses. etc., have not been included in either of the standards. It is anticipated that these will be either of the standards. It is anticipated that these will be covered by addendum sheets to be issued later. Electronic covered by addendum sheets to be issued later. Electronic app

applicalicatiotions ns wiwill ll alsalso o be be cocoververed ed mormore e thorthoroughoughly ly inin another standard.

another standard.

All JIC Standards are advisory on/y. Their use in industry All JIC Standards are advisory on/y. Their use in industry or trade

or trade is entire/y voluntaryis entire/y voluntary..

The JIC assumes no liability for any patent infringements The JIC assumes no liability for any patent infringements or asserted patent infringement which may result from the or asserted patent infringement which may result from the use of these standards.

use of these standards. Co

Commemments nts or or reqrequeuests sts fofor r infinformaormatiotion n regaregarding rding JICJIC activities or interpretations of the JIC standards should be activities or interpretations of the JIC standards should be addressed to the Secretary of the Joint Industrial Council, addressed to the Secretary of the Joint Industrial Council, care of the National Machine Tool Builders' Association. care of the National Machine Tool Builders' Association. 2139 Wisconsin A

2139 Wisconsin Avenue. N.W., Wvenue. N.W., Washington. ashington. D. C. D. C. 20007.20007.

ACKNOWLEDGEMENT ACKNOWLEDGEMENT

These standards are reproduced with the expressed permission of the Joint Industrial Council This portion is a reproduction These standards are reproduced with the expressed permission of the Joint Industrial Council This portion is a reproduction of the JIC Electrical Standards for Mass Production Equip

of the JIC Electrical Standards for Mass Production Equip ment. EMP-1-1967.ment. EMP-1-1967. SCOPE AND APPLICATION OF

SCOPE AND APPLICATION OF STANDARDSSTANDARDS

These standards supersede the Chrysler Corporation Electrical Standards for Industrial Equipment dated june.1963. These standards supersede the Chrysler Corporation Electrical Standards for Industrial Equipment dated june.1963.

They shall apply to all electrical systems, furnished as a part of the machine tool or mass production industrial equipment, They shall apply to all electrical systems, furnished as a part of the machine tool or mass production industrial equipment, which operate from a supply voltage of 600 volts or less, commencing at the power supply terminals on the disconnecting which operate from a supply voltage of 600 volts or less, commencing at the power supply terminals on the disconnecting means (See E1.2 for exceptions to this rule).

means (See E1.2 for exceptions to this rule).

The Sample Electrical Equipment Data Form attached hereto as Appendix F shall accompany all purchase inquiries for the The Sample Electrical Equipment Data Form attached hereto as Appendix F shall accompany all purchase inquiries for the particular equipment specified herein.

particular equipment specified herein. See the Forew

(4)

E1. General E1. General E1.1 Purpose

E1.1 Purpose. The purpose of this Electrical Standard is. The purpose of this Electrical Standard is to p

to p rovirovide de detaidetailed led specspecifiificationcations s for the for the applicaapplication tion of of electrical syst

electrical systems to mass production inems to mass production in dustrial equipmentdustrial equipment which will promote.

which will promote. (1) Safety to personnel. (1) Safety to personnel. (2) Uninterrupted production. (2) Uninterrupted production. (3) Long life of the equipment. (3) Long life of the equipment.

(4) Ease and low cost of maintenance. (4) Ease and low cost of maintenance. Th

This is ststanandadard rd iis s nonot t ininttenendeded d tto o lilimimit t or or ininhihibibitt ad

advavancncemement ent in in the the arart t of of elelecectritricacal l or or memechachanicnicalal engineering.

engineering. E1.2 Scope.

E1.2 Scope.The provisions of this standard shall apply toThe provisions of this standard shall apply to all

all eleelectrictrical cal sysystestems, ms, furfurnishnished ed as as part part of the of the masmasss produ

production industrial equipment, which ction industrial equipment, which operaoperate from te from aa supply voltage of 600 volts or less, commencing at the supply voltage of 600 volts or less, commencing at the power supply terminals on the disconnecting means. power supply terminals on the disconnecting means.

Exc

Excepteption ion NoNo. . 1: 1: HaHazardzardous ous LoLocatcationsions. . ThiThis s stastandardndard shal

shall l not not be be conconsidsidereered d adeadequaquate te fofor r masmass s proproducductiotionn ind

indusustritrial al eqequiuipmpment ent intintendended ed ffor or ususe e in in lolocacatitionsons designated as hazardous in the National Electrical Code. designated as hazardous in the National Electrical Code. *Exception No 2. Fixed or Portable Tools. This standard *Exception No 2. Fixed or Portable Tools. This standard is not intended to apply to 115 volt, single phase, portable is not intended to apply to 115 volt, single phase, portable ty

type pe equequipmipment, ent, usiusing ng corcord d coconnecnnectiotions. ns. unleunless ss sucsuchh equipment is auxiliary to the mass production industrial equipment is auxiliary to the mass production industrial equipment.

equipment. E1.3 Definitions. E1.3 Definitions.

*E1.3.1 Mass Production Industrial Equipment

*E1.3.1 Mass Production Industrial Equipment. Mass. Mass pr

prododucuctition on indindusustritrial al eqequiuipmpment ent is is dedefifinened d as as anyany equipment electrically powered or controlled, used in or equipment electrically powered or controlled, used in or nec

necesessary sary fofor r manumanufacfacturituring ng proprocecessesses s and and assassembemblyly equipment

equipment E1.3

E1.3.2 .2 ElecElectrictrical al SysSystemtems.s. ElecElectrical trical sysystemstems s shallshall include:

include:

(1) Electrical equipment consisting of motors, (1) Electrical equipment consisting of motors, solenoid-op

operaterated ed dedevicvices, es, limilimit t swswititchesches, , prespressursure e swswitcitcheshes,, control station electrical components and similar control station electrical components and similar contact-making devices, together with the

making devices, together with the associated wiring.associated wiring. (2)

(2) EleElectrctronic onic equequipmipment ent togtogethether er wiwith th the the assassociociateatedd wiring and devices.

wiring and devices. (3) Static

(3) Static controcontrol l equipequipment ment togetogether ther with the with the assoassociateciatedd wiring and devices.

wiring and devices. E1.3.3

E1.3.3 Nominal Nominal VVoltages.oltages.All voltages hereinafter will beAll voltages hereinafter will be considered nominal 115 volts, 230 volts and 460 volts. considered nominal 115 volts, 230 volts and 460 volts. (See A

(See Appendix C ppendix C for definition of nominal for definition of nominal voltage.)voltage.) E1.4 Additional Codes and Specifications

E1.4 Additional Codes and Specifications. On any point. On any point ffor or whwhicich h spspececifific ic prprovovisisioions ns are are nonot t mamade de in in thithiss standard. the provisions of the National Electrical Code standard. the provisions of the National Electrical Code (NEC) and state and local codes shall be observed. The (NEC) and state and local codes shall be observed. The National Fire

National Fire Protection AssProtection Association (NFPociation (NFPA) StandaA) Standard 79,rd 79, inc

incluludeded d wiwith th the the NaNatitionaonal l ElElecectritricacal l CoCode de appapplilieses specifically to machine tools. Articles 500 through 540 of specifically to machine tools. Articles 500 through 540 of the

the NatNationaional l EleElectrctricaical l CodCode e applapplyy, , as as applapplicaicablble, e, toto Hazardous Locations.

Hazardous Locations. E1.5

E1.5 SpecSpecific ific StaStandandards rds and and RevRevisiisiononss. . WheWhenenever aver a spe

specicifific c stanstandard dard is is mentmentionioned ed in in this standarthis standard, d, it it isis under- stood it will be "the latest revision thereof" unless under- stood it will be "the latest revision thereof" unless other- wise specified.

other- wise specified. E1.6 Deviations

E1.6 Deviations. Deviations from this standard shall have. Deviations from this standard shall have the

the apprapprovoval al of the of the purcpurchashaser er in in wriwritingting. . Any waiAny waiververss

granted shall apply only to the order in question and shall granted shall apply only to the order in question and shall not be considered as permanent.

not be considered as permanent. E1.7 Use

E1.7 Use of .'Shall" and of .'Shall" and "Sho"Should".uld".The word '.shall'. isThe word '.shall'. is unde

understrstooood d as as a a requrequiremirement; the ent; the wword ord "sh"shoulould" d" as as aa recommendation.

recommendation. *E1

*E1.8 .8 CoConfnforormimity ty to to JIJIC C StStanandadardrdss. . WWhhe n e n tthhee pur

purchaschaser er reqrequireuires s that that eleelectrctricaical l eqequipmuipment ent and and thethe ins

instaltallatlatioion n of of susuch ch eqequiuipmpment ent by by the the susupppplilier er shashallll conform to this standard and other requirements, it shall conform to this standard and other requirements, it shall be so specified on the purchase

be so specified on the purchase inquiry. (See E 1.9)inquiry. (See E 1.9) *E1.

*E1.9 9 AddAdditiitionaonal l UseUser r ReqRequiruiremeementsnts The The purpurchaschasee in

inququiriry y shshalall l be be acacccomompapaninied ed wwitith h an an ElElecectrtricicalal Equ

Equipmipment ent DatData a FoForm rm and and shalshall l be confbe confirmeirmed d on theon the purchas

purchase e orderorder. . (Se(See Appendix F e Appendix F for Sample Electricalfor Sample Electrical Equipment Data Form)

Equipment Data Form)

**E1.10 Approvals and Final Drawings

**E1.10 Approvals and Final Drawings. The industrial. The industrial equipment builder shall submit to the purchaser diagrams equipment builder shall submit to the purchaser diagrams and

and data data spespecicifified ed on on the the EleElectrictrical cal EquEquipmipment ent DatDataa Form.

Form.

**E1.10.1 Approvals

**E1.10.1 Approvals. Approval shall be obtained before. Approval shall be obtained before ele

electrctricaical l cocompomponentnents s are are instinstallalled ed on on the the induindustristrialal equipm

equipment. After ent. After preliminarpreliminary y approvaapproval l any any devdeviationsiations made by the equipment builder shall have the approval of made by the equipment builder shall have the approval of the purchaser in writing before changes are made.

the purchaser in writing before changes are made. **E

**E1.10.1.10.2 2 FinaFinal l DraDrawingwingss. . On On ccomomplpletetioion n oof f ththee ind

indusustritrial al eqequiuipmpment ent and and not not latlater er thathan n the the dadate te of of shi

shipmpmentent, , a a cocompmplelete te seset t of of nonnon-f-fololdeded d tratracincings gs or or reproducible copies of final diagrams shall be forwarded reproducible copies of final diagrams shall be forwarded tto o ththe e pupurcrchahaseserr. . ThThe e ququalalitity y oof f ththe e trtracacininggs s or or repr

reproduoducicible ble cocopiepies s shalshall l permpermit it makinmaking g chanchanges ges andand clearly legible prints. If any field changes are made by the clearly legible prints. If any field changes are made by the industrial equipment builder. they shall be recorded and a industrial equipment builder. they shall be recorded and a re

reproproduduciciblble e cocopy py of of the the chachangnged ed dradrawiwing ng shashall ll bebe forwarded to the purchaser or other designated person forwarded to the purchaser or other designated person E 2. Diagrams, Data, Nameplates and Identification E 2. Diagrams, Data, Nameplates and Identification E2.1 Diagrams. General

E2.1 Diagrams. General *E2.1.1 Drawing Size

*E2.1.1 Drawing Size. The electrical diagrams. including. The electrical diagrams. including panel layout. stock list and sequence of operations should panel layout. stock list and sequence of operations should be show

be shown n on on the the samsame e shesheet. The et. The fofoundaundatiotion n dradrawingwing should be shown on a separate sheet. Multiple sheets shall should be shown on a separate sheet. Multiple sheets shall be

be crocross-ss-refreferenerencedced. . All All infinformormatiation on shalshall l be be clclearlearlyy le

legigiblble e ShSheeeet t sisize ze shashall ll be be 2424" " x x 3636". ". (F(For or sasamplmplee diagrams, see Appendix B)

diagrams, see Appendix B) *E2.1.2 Diagrams Supplied

*E2.1.2 Diagrams Supplied. Diagrams of the electrical. Diagrams of the electrical system shall be furnished. The diagrams shall show the system shall be furnished. The diagrams shall show the eq

equiuipmpment ent seseriarial l numnumberber. . the the purpurchachaseser'r's s dradrawiwingng number. purchase order number or similar identification number. purchase order number or similar identification which will indicate the particular equipment to which the which will indicate the particular equipment to which the diagrams apply. Diagrams shall show all equipment in the diagrams apply. Diagrams shall show all equipment in the el

elecectritricacal l sysyststem em incincluludinding g intinternernal al wiwirinring g of of susub- b-assemblies. Diagrams of sub-assemblies may be furnished assemblies. Diagrams of sub-assemblies may be furnished on separate sheets.

on separate sheets. Exc

Excepteption. ion. On On induindustristrial al equequipmipment ent havihaving ng onlonly y oneone motor and one starter. the diagram normally furnished motor and one starter. the diagram normally furnished with the combination starter is satisfactory. provided the with the combination starter is satisfactory. provided the diag

diagram ram shoshows all ws all of the of the eleelectrctricaical l appapparataratus us on on thethe industrial equipment.

industrial equipment.

E2.1.3 Symbols and Device Designations E2.1.3 Symbols and Device Designations.. E2.1.

E2.1.3.1 3.1 StaStandarndard d electelectricarical l symsymbolbolss as as shshoowwn n inin Appendix A shall be used for all diagrams For symbols Appendix A shall be used for all diagrams For symbols

(5)

no

not t shoshown wn in in ApAppependndix ix A A rerefefer r to to UnUnitited ed StStalales es of of America Standard Y32.2. Symbols for logic devices shall America Standard Y32.2. Symbols for logic devices shall be in accordance with NEMA Standard IC-I. Industrial be in accordance with NEMA Standard IC-I. Industrial

Control. Control.

Exception. Special symbol

Exception. Special symbols may be used where ts may be used where t here is here is nono standard symb

standard symbol; such ol; such symsymbolbols s shall shall be identifiebe identified d andand ex

explaplaineined d boboth th on on the the didiagragramams s and and in in insinstrutructctionion manuals.

manuals. E2.1.3.2

E2.1.3.2 The symbols for devices shall be identified by aThe symbols for devices shall be identified by a number or number-Ietter combination, using abbreviations number or number-Ietter combination, using abbreviations sho

shown wn in in AppAppendiendix x D. D. FoFor r spespeciacial l ababbrebreviaviatiotions ns notnot listed. refer to NEMA Standard IC-1. Industrial Control. listed. refer to NEMA Standard IC-1. Industrial Control. E2.1 3.3

E2.1 3.3The following alphabetical designations shall beThe following alphabetical designations shall be used for the devices indicated and shall not be used for used for the devices indicated and shall not be used for other identification purposes:

other identification purposes:

IItteemmss EExxaammpplleess

R

Reellaayyss--GGeenneerraal Ul Ussee CCRR, 1, 1CCRR, 2, 2CCR R

--MMaasstteerr CCRRMM

--AAuuttoommaattiicc CCRRAA -Electronically

-Electronically Energized

Energized CRE, 1CRE, 2CRECRE, 1CRE, 2CRE

--MMaannuuaall((hhaanndd)) CCRRHH

--LLaattcchh CCRRLL, , 11CCRRLL, , 22CCRRLL --UUnnllaattcchh CCRRUU, , 11CCRRUU, , 22CCRRUU T

Tiimmeerrss TTRR, , 11TTRR, , 22TTR R O

Ovveerrllooaad d RReellaayy OOLL, , 11OOLL, 2, 2OOLL M

Moottoor r SSttaarrtteerrss 11MM, , 22MM, , eettcc.. R

Reevveerrssiinng g MMoottoor r Starters Starters 1 M F ( Forward)- 1 M R 1 M F ( Forward)- 1 M R (Reverse) (Reverse) E Exxaammppllee:: 22M M FF Starter Number Starter Number Forward Forward P Plluuggss 11PPLL, , 22PPLL, , eettcc.. E Exxaammppllee:: 22PPL L 66 Plug Number Plug Number Pole Number Pole Number S Soolleennooiiddss 11SSOOLL. . 22SSOOLL, , 33SSOOLL L

Liimmiit t SSwwiittcchheess 11LLSS, , 22LLSS, , 33LLSS P

Prreessssuurre e SSwwiittcchheess 11PPSS, , 22PPSS, , 33PPSS E2.1.3.4

E2.1.3.4 Special abbreviations not covered by the aboveSpecial abbreviations not covered by the above paragraphs may be used and shall be identified on the paragraphs may be used and shall be identified on the

diagram:; and In

diagram:; and In the instruction manual.the instruction manual. E2.1.4

E2.1.4 Conductor Identification. Each conductor shall beConductor Identification. Each conductor shall be id

idenentitifified ed by by a a nunumbmberer. . leletttter er or or nunumbmberer-I-Ietetteter r com

combinatiobination. n. ConsConsecutiecutive ve numbering is numbering is prefepreferred. Therred. The ide

identintificficatiation on shalshall l be be useused d onlonly y onconce e in in the the eleelectrictricalcal system. Each conductor shall have the same identification system. Each conductor shall have the same identification at all terminals and tie points. All conductors connected to at all terminals and tie points. All conductors connected to the same

the same tetermirminal nal or or titie e popoint int shashall ll havhave e the the sasameme identification. Where multiconductor cable is used. a identification. Where multiconductor cable is used. a color color code may be used to supplement the above identification. code may be used to supplement the above identification. Whe

Where re cocolorlor- - cocoded ded mulmulticticonduonductctor or cacable ble is is useused d fofor r wiring identical components. such as limit switches. the wiring identical components. such as limit switches. the color code used shall he consistent and charted on related color code used shall he consistent and charted on related diagrams.

diagrams.

E2.1.5 Sub-assembly Terminal Identification

E2.1.5 Sub-assembly Terminal Identification. Terminal. Terminal numbers. letters or number-Ietter combinations for numbers. letters or number-Ietter combinations for sub-assemblies or components shall be identified assemblies or components shall be identified distinctively-and associated with

and associated with the sub-assembly or component.the sub-assembly or component.

E2.2 Elementary (Schematic) Diagram. E2.2 Elementary (Schematic) Diagram. E2.2.1

E2.2.1An elementary diagram shall be furnished for eachAn elementary diagram shall be furnished for each electrical system. A logic diagram may be furnished in electrical system. A logic diagram may be furnished in lieu of or in combination with an elementary diagram . lieu of or in combination with an elementary diagram . E2.2.2

E2.2.2 The elementary diagram shall be drawn betweenThe elementary diagram shall be drawn between vertical lines which represent

vertical lines which represent the source of control power .the source of control power . All control devices shall be shown between these lines. All control devices shall be shown between these lines. Actuating coils of control devices shall be shown on the Actuating coils of control devices shall be shown on the right-hand side. All contacts shall be shown between the right-hand side. All contacts shall be shown between the coils and the left vertical line.

coils and the left vertical line.

Where the internal wiring diagrams of sub-assemblies are Where the internal wiring diagrams of sub-assemblies are furnished on separate sheets. they shall be shown as a furnished on separate sheets. they shall be shown as a rec

rectangtangle le in in the the eleelemenmentary diagrtary diagram am wiwith th all all exexternaternall po

points ints idenidentiftifieied d and and crocross-ss-rereferferenceenced d to to the the seseparaparatete sheet

sheet(s) of the (s) of the controcontrol l circuicircuit. Coils and t. Coils and contacontacts internalcts internal to

to the the susub-ab-assessemblmblieies s shalshall l be shown be shown in in the the recrectangtanglele connected to their terminal points.

connected to their terminal points. Exception No. 1

Exception No. 1: Where relay and electronic circuits are: Where relay and electronic circuits are mixed. diagrams may be drawn between horizontal lines mixed. diagrams may be drawn between horizontal lines which represent the

which represent the source of control powsource of control power .er . Exc

Excepteption ion No.No.22. . OOveverlrloaoad d rerelalay y cconontatactcts s mamay y bbee co

connennectcted ed to to the the rigright ht of the of the cocoil il (c(comommomon) n) if if thethe co

conducnductortors s bebetwtween een sucsuch h concontactacts ts and and the the cocoils ils of of thethe mag

magnenetitic c dedeviviceces s do do not not exextetend nd bebeyyond ond the the cocontrntrolol enclosure.

enclosure. E2.2.2.1

E2.2.2.1 Control device symbols should be shown in theControl device symbols should be shown in the order in which the controls are energized and positioned order in which the controls are energized and positioned on the diagr

on the diagr am for clarity.am for clarity. *E2.2.2.2

*E2.2.2.2 A cross-rA cross-refereferencing encing sysystem shall stem shall be used be used inin co

conjnjuncunctition on wiwith th eaeach ch rerelay lay cocoil il so so thathat t asassosociciatateded contacts may be readily located on the diagram. Where a contacts may be readily located on the diagram. Where a relay contact appears on a sheet separate from the one on relay contact appears on a sheet separate from the one on which the coil is shown. the purpose of the contact shall which the coil is shown. the purpose of the contact shall be described on the same sheet.

be described on the same sheet. E2.2.2.3

E2.2.2.3Only contacts actually used shall be shown.Only contacts actually used shall be shown. E2.2.2.4

E2.2.2.4Limit. pressure. Limit. pressure. float, flowfloat, flow. temperature-sensitive. temperature-sensitive and

and sisimimilar lar s\s\\\ititch ch sysymmbobols ls shashall ll be be shshowown n on on thethe elementary diagram with all utilities turned off (electric elementary diagram with all utilities turned off (electric power, air. gas. oil, water. lubrication. etc.) and with the power, air. gas. oil, water. lubrication. etc.) and with the

equipment at its normal starting position. equipment at its normal starting position. E2.2.2.5

E2.2.2.5 ConContactacts ts of of multmultipleiple-c-contaontact ct dedevicvices es (e.(e.g..g.. se

selelectctor or swswititcheches) s) shashall ll be be shshowown n on on the the linline e of of thethe elementary diagram where they are connected in a circuit. elementary diagram where they are connected in a circuit. A mechanical connection between the multiple contacts A mechanical connection between the multiple contacts shall be indicated by a dotted line or arrow. This does not shall be indicated by a dotted line or arrow. This does not apply to control relays. starters or contactors.

apply to control relays. starters or contactors. E2.2.2.6

E2.2.2.6 Additional charts or diagrams may be used toAdditional charts or diagrams may be used to indicate the positIon of multiple-contact devices such as indicate the positIon of multiple-contact devices such as drum, cam a

drum, cam and selector switches.nd selector switches. E2.2.2.7

E2.2.2.7 The The conconnecnectitions ons bebetwtween een push push butbuttontons. s. limilimitt switches and similar items connected in series shall be switches and similar items connected in series shall be shown as test points on the diagram as required in E shown as test points on the diagram as required in E 12.4.14.

12.4.14. E2.2.2.8

E2.2.2.8 The purpose or function of all switches shall beThe purpose or function of all switches shall be sho

shown wn eiteither her adjadjaceacent nt to the to the sysymmbobols. or ls. or in in a a swswitcitchh desc

description chart. The chart ription chart. The chart shall be on the shall be on the same sheet assame sheet as the symbol.

the symbol. *E2.2.2. 9

*E2.2.2. 9 The purpose or function of controls such asThe purpose or function of controls such as relays, starters. contactors. solenoids, sub-assemblies and relays, starters. contactors. solenoids, sub-assemblies and timers shall be shown on the diagram adjacent to their timers shall be shown on the diagram adjacent to their res

(6)

so

solenlenoid oid valvalve ve shalshall l be shown be shown adjadjaceacent nt to to the the valvalveve solenoid symbol.

solenoid symbol. E2.2.2.10

E2.2.2.10 VValualues es of of capcapaciacitortors s and and resresististors ors shalshall l bebe shown on the diagram.

shown on the diagram. E2.2.2.11

E2.2.2.11 DeDescrscriptiiptive ve terterms ms fofor r cocommanmmand d and and stastatustus fu

funcnctitions ons shashall ll be in be in the the prepresesent nt or or paspast t tetensnse. e. FoFor r exa

examplmple. e. RaiRaise se TraTransfnsfer-er-TraTransfnsfer er RaiRaisedsed: : AdAdvancvancee Transf

Transfer-Ter-Transfer Advancransfer Advanced. Terms ed. Terms such such as as " " TransfTransfer er Up'. shall not be used.

Up'. shall not be used. **E2.2.2.12

**E2.2.2.12 CoCoils ils of of relrelayays s and and othother er concontrol trol dedevicviceses should be grouped and drawn in the following order should be grouped and drawn in the following order (1) Sequencing and position indicating relays. etc. (1) Sequencing and position indicating relays. etc. (2) Solenoids for valves.

(2) Solenoids for valves.

Within each group. control devices shall be shown in the Within each group. control devices shall be shown in the order or energization.

order or energization. Ex

Exceceptptioion: n: SoSolelenonoidids s cocommmmon on to to a a vavalvlve e shshouould ld bebe grouped together; for example: “Clamp" and "Un-clamp." grouped together; for example: “Clamp" and "Un-clamp." E2.2.3

E2.2.3 ElectroElectronic nic Diagram.Diagram. Electronic diagrams Electronic diagrams shallshall inc

inclulude de pepertirtinennent t datdata a fofor r maimaintntenaenancnce e purpurpoposeses s asas follows.

follows.

(1) Voltage and current data necessary for maintenance (1) Voltage and current data necessary for maintenance purposes.

purposes.

(2) Normal voltages on transformer windings. (2) Normal voltages on transformer windings. (3) Signal input and output voltages.

(3) Signal input and output voltages. (4) Potentials applied to tube elements. (4) Potentials applied to tube elements.

(5) Oscilloscope traces. showing wave form and peak- (5) Oscilloscope traces. showing wave form and peak- to- peak voltages where meter readings are inadequate.

peak voltages where meter readings are inadequate.

(6) The type and sensitivity or test instruments to be used (6) The type and sensitivity or test instruments to be used and the condition of the circuit.

and the condition of the circuit. (7

(7) ) The The insinstantantantaneoeous us popolarlaritity y or or eaeach ch tratransnsfoformrmer er winding in phase sensitive circuits.

winding in phase sensitive circuits. (8

(8) ) ThThe e elelecectrtricical al vavalulues es of of cacapapacicitotorsrs. . reresisiststorors.s. inductances and other electronic components.

inductances and other electronic components. E2.3 Block and Logic Diagrams.

E2.3 Block and Logic Diagrams. E2.3

E2.3.1 .1 Block Block DiagDiagram.ram. WhWhere ere the the comcompleplexitxity y or or thethe co

controntrol l sysystestem m warwarrantsrants. . a a blblocock k diadiagram gram of of cocontrontroll ffununctctioions ns shshalall l bbe e fufurnrnisishehed. d. EaEach ch blblocock k shshalall l bebe ide

identintifiefied d and and crocross-ss-rereferferenceenced d in in a a manner that manner that thethe internal circuitry may be found readily on the elementary internal circuitry may be found readily on the elementary diagram.

diagram.

E2.3.2 Logic Diagram

E2.3.2 Logic Diagram. A logic diagram of the electrical. A logic diagram of the electrical sy

systestem m shalshall l be be furfurnishnished ed whewhen n stastatic tic cocontrontrol l or or loglogicic modules are supplied. The diagram need not show power modules are supplied. The diagram need not show power connections.

connections.

E2.4 Panel Layout and Interconnection Diagram. E2.4 Panel Layout and Interconnection Diagram. *E2.4.1

*E2.4.1The panel layout shall show the general physicalThe panel layout shall show the general physical arrang

arrangemeement nt of all of all comcomponponents on ents on the the concontrol panel.trol panel. Devices may be represented by rectangles or squares and Devices may be represented by rectangles or squares and shall be identified with the same marking as used on the shall be identified with the same marking as used on the eelelemementntarary y didiagagraram m SSpaparre e papanenel l sspapacce e shshalall l bbee dimensioned The drawings shall include a layout of the dimensioned The drawings shall include a layout of the opera

operator's consoltor's console e or or push button push button statistation, on, but terminalbut terminal numbers need not

numbers need not be shown. This layout may be combinedbe shown. This layout may be combined on the

on the same drawing with the interconnecsame drawing with the interconnection diagram or tion diagram or wiring table. (See Sample Diagram in Appendix

wiring table. (See Sample Diagram in Appendix B.)B.) E2.4.2

E2.4.2 PhoPhotogtographs raphs of of eleelectrctronic onic chaschassis sis and and simsimilar ilar complex devic

complex devices ma} he furnises ma} he furnis hed in lieu hed in lieu of panel layouts,of panel layouts, provided each component is

provided each component is clearly visiblclearly visible and e and identified.identified. E2.4.3

E2.4.3 -An interconnect-An interconnection diagram ion diagram or wiring or wiring tabltable shalle shall be furnished to Indicate the Interconnecting conductors be furnished to Indicate the Interconnecting conductors between all terminals on each terminal block for all panel, between all terminals on each terminal block for all panel,

and

and chassichassis s comprcomprising ising the the comcomplete electriplete electrical cal sysystem.stem. Eac

Each h conconnecnectiotion n shalshall l be identibe identifiefied d as as shoshown wn on on thethe ele

elemenmentary diagram tary diagram BlaBlank nk spaspaceces s and and spaspare re termterminalinalss shall be shown.

shall be shown. **E2.4.4

**E2.4.4 FoFor r lologigic c cocontrntrol ol sysyststemems, s, a a papanel nel lalayyououtt diag

diagram ram shalshall l (1) consi(1) consist st of an of an outoutline of the line of the cocontrontroll panel, and (2) show the general physical arrangement of panel, and (2) show the general physical arrangement of

th

the e papanenel-l-momoununteted d dedeviviceces. s. EaEach ch dedevivice ce mamay y bebe repres

represented a ented a square or rectangle. Each device shall havesquare or rectangle. Each device shall have the same identification as on the elementary diagram. the same identification as on the elementary diagram. E2.

E2.5 5 StStocock k LisListt The The stostock ck lislist t shalshall l shoshow w quantquantityity,, manufacturers name, type or model and catalog number of manufacturers name, type or model and catalog number of each device used: motor horsepower, frame size. type of each device used: motor horsepower, frame size. type of enclosure, and speed: and any other information necessary enclosure, and speed: and any other information necessary to order replacement electrical and electronic items

to order replacement electrical and electronic items E2.6 Sequence of

E2.6 Sequence of OperatioOperationn. The sequence of operation. The sequence of operation shall indicate the progression of operations of all shall indicate the progression of operations of all push- butt

buttons, limit ons, limit swiswitchestches. . relayrelays. s. solesolenoids and noids and other de-other de-vices as shown and identified on the elementary diagram. vices as shown and identified on the elementary diagram. Graphical representations, such as bar charts. may be used Graphical representations, such as bar charts. may be used to supplement written descriptions.

to supplement written descriptions. E2.7 Instruction Manuals

E2.7 Instruction Manuals. On complex equipment. such. On complex equipment. such as

as numerical control numerical control sysystemstems. s. servservo o controcontrols, ls, elecelectricatricall variable-speed drives. etc.. an instruction manual shall be variable-speed drives. etc.. an instruction manual shall be furnished. The following shall be included:

furnished. The following shall be included: (1) Information necessar

(1) Information necessary for y for calibrcalibrating ating and and adjuadjustingsting components. devices and

components. devices and sub-assemsub-assemblies.blies. (2)

(2) OpeOperatiration on instrinstructuctionions. s. inclincluding uding all all infinformaormatiotionn nec

necesessarsary y to to desdescricribe be the the opoperateration ion of of thethe: : comcomplepletete system.

system.

(3) Maintenance instructions, including information and (3) Maintenance instructions, including information and suggestions for locating and replacing faulty components. suggestions for locating and replacing faulty components. suggested maintenance schedules and related data.

suggested maintenance schedules and related data. (4

(4) ) A A rerecocommmmendended ed spspare are parparts ts lilist st wiwith th cocompmpleletete ordering information and suggested quantities.

ordering information and suggested quantities. E2.8 Electrical Layout

E2.8 Electrical Layout. The electrical layout shall consist. The electrical layout shall consist or an outline or the equipment, not necessarily to scale. or an outline or the equipment, not necessarily to scale. showing the control panel enclosure and its dimensions, showing the control panel enclosure and its dimensions, op

operaeratotor'r's s coconsnsolole e and and acaccecessssorory y uniunits ts nonot t atattatachechedd directly to the equipment. such as hydraulic power units. directly to the equipment. such as hydraulic power units. in their relative locations The drawing shall also show the in their relative locations The drawing shall also show the loc

locatiation on or or cocontrontrol l dedeviviceces s whowhose se lolocatcation ion canncannot ot bebe rea

readildily y dedetetermrmineined d frfrom om the the elelememententarary y and and ototheher r el

elecectritricacal l diadiagragrams. ms. susuch ch as as limlimit it swswititchches es usused ed onon indexing

indexing

mechanisms. All devices shall be identified as shown on mechanisms. All devices shall be identified as shown on the elementary diagram.

the elementary diagram. E2.9

E2.9 FoFoundundatiation on DraDrawingwing. . On On eqequiuipmpment ent rerequiquirinringg conduit in the foundation. the minimum size, purpose and conduit in the foundation. the minimum size, purpose and location of the conduit to be used shall be shown on a location of the conduit to be used shall be shown on a foundation drawing.

foundation drawing.

E2.10 Equipment Nameplates. E2.10 Equipment Nameplates. E2.10.1

E2.10.1 Main NameplateMain Nameplate. A permanent non-corrodible. A permanent non-corrodible nameplate shall be attached to the control enclosure door nameplate shall be attached to the control enclosure door This nameplate shall list the following:

This nameplate shall list the following: (1) Equipment serial number

(1) Equipment serial number (2) Supply voltage, phase

(2) Supply voltage, phase and and frequencyfrequency.. (3) Rated K V A or full-Ioad current (see E 2

(3) Rated K V A or full-Ioad current (see E 2 .10.1.1)..10.1.1). (4) NEMA interrupting capacity of the circuit breaker (if (4) NEMA interrupting capacity of the circuit breaker (if supplied)

supplied)

(5) Ampere rating of the largest motor . (5) Ampere rating of the largest motor .

(7)

(6) Supplier's electrical diagram number. (6) Supplier's electrical diagram number. Exception.

Exception. WWhehere re ononly ly a a sisingngle le momototor r anand d momottor or controller are used, the motor nameplate may serve as the controller are used, the motor nameplate may serve as the electrical equipment nameplate if it

electrical equipment nameplate if it is plainly visible.is plainly visible. E2.10.1.1

E2.10.1.1.The full-load current shown on the nameplate.The full-load current shown on the nameplate shall be not less than the sum of the full-Ioad currents shall be not less than the sum of the full-Ioad currents required for all motors and other equipment which may be required for all motors and other equipment which may be in operation at the same time under normal conditions of in operation at the same time under normal conditions of use

use. . WheWhere re unusunusual ual loaloads, ds, dutduty y cycyclecles, s, etcetc.. .. reqrequireuire ov

oversersizeized d conconducductortors, s, the the reqrequireuired d capcapaciacity ty shall shall bebe included in the .”full-load current" rating as marked. included in the .”full-load current" rating as marked. E2.10.1.2

E2.10.1.2 Where more than one Incoming supply circuitWhere more than one Incoming supply circuit is

is proprovidvided, the ed, the namenameplatplate: e: shalshall l statstate e the the ababovove e inin-formation for each circuit

formation for each circuit E2.10.1.3

E2.10.1.3 Where overcWhere overcurrent urrent proteprotection is ction is proviprovided inded in accordance with E 4 3. Main and Branch Circuit accordance with E 4 3. Main and Branch Circuit Over-current Protection. the: nameplate shall be permanently current Protection. the: nameplate shall be permanently marked "Overcurren

marked "Overcurrent t proteprotection provided at ction provided at equipmequipmentent supply terminals. A separate nameplate may be used for supply terminals. A separate nameplate may be used for this purpose

this purpose E2.10.1.4

E2.10.1.4 WhWherere e ththe e bbuiuildlder er wwiishshes es to to inindidicacatete ccomomplpliaiancnce e wwitith h ththis is anand d ototheher r sstatandndarardsds, , it it isis re

recocommmmendended ed thathat t the the namnamepeplatlate e be be marmarkeked d wiwith th aa no

notattatioion n sisimimilar lar to to the the fofollllowowinging: : '.'.The The elelecectrtricicalal equipment and wiring on this machine conform to the equipment and wiring on this machine conform to the following standard(s) ...”

following standard(s) ...” E2.10.2

E2.10.2 AdAddidititionaonal l NaNamemeplplatates es WhWhere ere elelecectritricacall equ

equipmipment ent is is remremoveoved d frofrom m the the origoriginal inal enclenclosurosure, e, or or whe

where re equequipmipment ent is is so so plaplaced that ced that the the manumanufacfactureturer'sr's nameplate is not readily visible, an additional nameplate nameplate is not readily visible, an additional nameplate shall be permanently attached to the equipment or shall be permanently attached to the equipment or en-closure. Nameplates shall not be removed from electrical closure. Nameplates shall not be removed from electrical equipment.

equipment.

E2.11 Device Identification

E2.11 Device Identification Control and power devicesControl and power devices shal

shall l be be plaplainly and inly and perpermanenmanently identitly identifiefied. d. usiusing ng thethe same identification as shown on the elementary diagram. same identification as shown on the elementary diagram. Identification shall be shown on a plate mounted adjacent Identification shall be shown on a plate mounted adjacent to, not on, the device. Control station components shall be to, not on, the device. Control station components shall be identified by function. (See E 9.3.2)

identified by function. (See E 9.3.2) Exception No.1

Exception No.1. Where the size or location of the devices. Where the size or location of the devices mak

make e indiindividvidual ual ideidentintificficatiation on imprimpractacticaical. l. sucsuch h as as onon electronic assemblies

electronic assemblies, group identification s, group identification s hall be used.hall be used. Except

Exception ion No.2No.2. . WhWherere e panpanel el lalayyououts ts do do not not pepermirmitt mounting identifica

mounting identification tion plateplates s adjacadjacent ent to to comcomponents,ponents, such as relays, the permanent relay identification shall be such as relays, the permanent relay identification shall be pla

placeced d on on the the relrelay wheray where e it it is is plaiplainly visnly visiblible. and e. and aa se

seconcond d ideidentifntificaicatiotion n proprovidvided ed on on the the top of top of the the panepanell wire

wireway cover way cover directdirectly ly belbelow ow the the relayrelay. . The The wirewirewayway covers shall be identified to show their proper location. covers shall be identified to show their proper location. **E2.12 Identification Plates.

**E2.12 Identification Plates. **E2.12.1

**E2.12.1 Plates for devices mounted inside the controlPlates for devices mounted inside the control enclosure shall be one

enclosure shall be one of the following:of the following:

(1) Non-corrodible metal for engraving stock; a minimum (1) Non-corrodible metal for engraving stock; a minimum of 0.031 inch thick.

of 0.031 inch thick.

(2) Non-corrodible metal for embossing stock; a mini (2) Non-corrodible metal for embossing stock; a mini mummum of 0.012 inch thick.

(3) Laminated phenolic for engraving stock; a minimum (3) Laminated phenolic for engraving stock; a minimum of 0.062 inch thick.

Plates shall be held in place with metallic drive screws or Plates shall be held in place with metallic drive screws or the

the equequivaivalenlent. t. PePermanrmanent ent adheadhesisives ves shalshall l be be useused d fofor r attaching

attaching nameplates to wireway covnameplates to wireway covers.ers.

**E2.12.

**E2.12.22 PlPlateates s fofor r dedevicvices es moumountented d exexternaternal l to to thethe control enclosure shall be non-corrodible metal. a control enclosure shall be non-corrodible metal. a mini-mum of 0.031 inch thick for engraving stock or 0.012 mum of 0.031 inch thick for engraving stock or 0.012 inch thick for embossing stock. Plates shall be held in inch thick for embossing stock. Plates shall be held in place with metallic d

place with metallic d rive screws.rive screws.

E3. Supply Circuit Disconnecting Means E3. Supply Circuit Disconnecting Means *E3.1 Scope

*E3.1 Scope. This section shall apply to all industrial. This section shall apply to all industrial eq

equiuipmpmenent, t, ininclclududing ing poportrtabable le anand d sesemimi-p-porortatablblee equipment except: (1) small bench-type tools powered by equipment except: (1) small bench-type tools powered by a single motor rated less than 1/4 horsepower operating a single motor rated less than 1/4 horsepower operating from a 115 volt supply, and (2) welding transformers and from a 115 volt supply, and (2) welding transformers and their control circuits.

their control circuits. E3.2 Type

E3.2 Type.. E3.2.1

E3.2.1 Where nominal 115 volt, single phase, is Where nominal 115 volt, single phase, is the onlythe only power supply to the equipment, a fused disconnect switch power supply to the equipment, a fused disconnect switch

or circuit breaker of suitable size shall be ins or circuit breaker of suitable size shall be ins talled.talled. E3.2.2

E3.2.2 On all other equipment the builder shall furnish,On all other equipment the builder shall furnish, as

as spspececififieied d by by the the purpurchachaseserr, , onone e of of the the ffolollolowiwingng disconnecting means:

disconnecting means: (1) A

(1) A fufusibsible le or or non-non-fufusibsible le motmotor or circcircuit uit swswititch ch cocon- n-forming to all requirements, except enclosures, listed in forming to all requirements, except enclosures, listed in NEMA Standard KS-I, Enclosed Switches, for heavy duty NEMA Standard KS-I, Enclosed Switches, for heavy duty

type HO switches, or type HO switches, or

(2) A circuit breaker conforming with N EMA Standard (2) A circuit breaker conforming with N EMA Standard AB-I, Molded Case Circuit Breakers, or

AB-I, Molded Case Circuit Breakers, or (3) A fusi

(3) A fusible or non-fusible circuit inble or non-fusible circuit in terrupter.terrupter. E3.2.3

E3.2.3 WhWhen en a a seseparparatatelely y momountunted ed sasafefety ty swswititch ch isis specified by the purchaser as auxiliary equipment, it shall specified by the purchaser as auxiliary equipment, it shall b

be e a a NENEMA MA heaheavy vy duduty ty indindusustritrial al tytypepe, , manmanualually ly--op

operaerateted, d, fufusisiblble e or or nonnon-f-fususibible le (a(as s spspececififieied) d) andand mounted in a NEMA Type 12 enclosure.

mounted in a NEMA Type 12 enclosure. E 3.3 Rating.

E 3.3 Rating. E3.3.1

E3.3.1 The ampacity of the disconnecting means shall beThe ampacity of the disconnecting means shall be not less than

not less than 11115 5 perpercencent t of the of the sum of sum of the the fufull-ll-IoaIoadd curr

currents requirents required ed for all for all equequipmipment ent whiwhich ch may be may be inin operation at the same time under normal conditions. operation at the same time under normal conditions. E3.3.2

E3.3.2 The The interinterruptrupting ing capcapaciacity ty of of the the disdisconconnecnectingting means shall be not less than the sum of the locked rotor means shall be not less than the sum of the locked rotor current of the largest motor plus the full-load current of current of the largest motor plus the full-load current of the other connected operating equipment.

the other connected operating equipment. E3.4

E3.4 ApplicaApplication.tion. The The disdisconconnecnecting ting meameans ns shalshall l bebe applied in accordance with E4, Protection.

applied in accordance with E4, Protection. E3.5 Position Indication.

E3.5 Position Indication. The disconnecting means shallThe disconnecting means shall p

plailainlnly y indindicicatate e whwhethether er it it is is in in the the opopen en or or clclososeded position. (See E 3.11.3)

position. (See E 3.11.3) E3.6

E3.6 SuSupplpply y ConConducductotors rs to to be be DiscDisconnonnectecteded. . ThThee dis

disconnconnectecting ing meanmeans s shalshall l disdiscoconnecnnect t all all ungrungroundoundeded condu

conductors of ctors of the the supplsupply y circucircuit it simultansimultaneouseouslyly. . WhereWhere th

therere e is is momore re ththan an onone e susupppply ly sosoururcce, e, adaddidititiononalal individual disconnecting means shall be provided for each individual disconnecting means shall be provided for each su

supplpply y cicircrcuiuit t so so thathat t alall l susupplpply y cocondunductctors ors mamay y bebe interrupted.

interrupted. E3.7

E3.7 SuSupplpply y Line Line ConConnectnectionion. . The The incincominoming g supsupplyply co

conducnductortors s shalshall l terterminatminate e at at the the disdisconnconnectecting ing meanmeanss with no connection to terminal blocks or other devices with no connection to terminal blocks or other devices ahead of the disconnecting means.

ahead of the disconnecting means. E3.8

E3.8 Exposed Exposed Live Live PartsPartsThere shall be no exposed liveThere shall be no exposed live p

partarts s whwhen en the the didiscsconnonnecectinting g memeanans s is is in in the the opopenen position.

(8)

E3.9 Mounting. E3.9 Mounting. E3.9.1

E3.9.1The disconnecting means shall be mounted withinThe disconnecting means shall be mounted within the control enclosure.

the control enclosure.

*Exception: Where panel-mounting or an 800 ampere or *Exception: Where panel-mounting or an 800 ampere or larger disconne

larger disconnecting means cting means is impractical, the is impractical, the equipmequipmentent builder shall furnish a circuit breaker in a NEMA Type 12 builder shall furnish a circuit breaker in a NEMA Type 12

enclosure for installation by the purchaser . enclosure for installation by the purchaser . *E3.9.2

*E3.9.2If more than one disconnecting means is providedIf more than one disconnecting means is provided for multiple supply circuits in a single enclosure, they for multiple supply circuits in a single enclosure, they sha

shall ll be be grgrououpeped d in in onone e lolocacatition on and and memechachanicnicalallyly interlocked with the door(s).

interlocked with the door(s). E3.9.2.1

E3.9.2.1 WhWhen en didiscsconnonnecects ts are are momountunted ed in in sesepaparatratee enclosures, each supplying power to part of a complete enclosures, each supplying power to part of a complete machine or equipment, the following provisions shall be machine or equipment, the following provisions shall be made:

made:

(1) A main disconnecting means shall be furnished to (1) A main disconnecting means shall be furnished to de-energize the entire

energize the entire systsystem, andem, and (2

(2) ) The The didiscsconnonnecectinting g memeans ans in in any of any of the the seseparparatatee control enclosures shall de-energize all current- carrying control enclosures shall de-energize all current- carrying components in that enclosure when placed in the “OFF” components in that enclosure when placed in the “OFF” position.

position.

Exception: Control devices and terminals located in the Exception: Control devices and terminals located in the enclosure but energized from a remote source need not be enclosure but energized from a remote source need not be de-energized if iden

de-energized if iden tified by yelltified by yellow wiring.ow wiring. *E3.9.3

*E3.9.3The disconnecting means shall be mounted at theThe disconnecting means shall be mounted at the to

top p of the of the cocontrontrol l panepanel; l; no no othother er eqequipmuipment ent shalshall l bebe mounted directly above it. In enclosures with more than mounted directly above it. In enclosures with more than three doors, the disconnecting means shall be on the panel three doors, the disconnecting means shall be on the panel at either the extreme right or left.

at either the extreme right or left. **E3.9.4

**E3.9.4 On On bebench-nch-tytype pe equequipmipment ent the the cocombmbinatiinationon starter need not be mounted on the equipment.

starter need not be mounted on the equipment. E3.10 Interlocking.

E3.10 Interlocking. E3.10.1

E3.10.1Where there are two or more sources of power toWhere there are two or more sources of power to th

the e eeququipipmmenent t or or wwheherre e ththerere e arare e ttwwo o or or mmororee independent disconnecting means. not mechanically independent disconnecting means. not mechanically inter-lo

lockcked ed wwitith h eaeach ch ototheherr. . popowwer er wwiriring ing frfrom om eaeachch disconnecting means shall be run in separate conduit, and disconnecting means shall be run in separate conduit, and shall not terminate in or pass through common junction shall not terminate in or pass through common junction boxes.

boxes. *E3.10.2

*E3.10.2 WheWhen n the the disdisconconnecnecting ting meanmeans s is is moumountednted wi

withithin n the the cocontrntrol ol enenclclososurure. e. it it shashall ll be be intinterlerlocockekedd me

mechachanicnicalally ly wiwith th the the cocontrntrol ol enenclclososurure e dodooror(s(s). ). AA su

suitaitablble e dedevivicece, , opoperaerateted d by by a a scscrerewdwdririvever r or or ototheher r ccomommomon n hahand nd totoolol, , shshalall l be be prproovivideded d so so ththat at ththee interlocks may be by- passed and the panel doors opened interlocks may be by- passed and the panel doors opened with

without out discdisconnecting the onnecting the powpowerer. . InterloInterlocking cking must bemust be reacti

reactivated automaticavated automatically when lly when panel panel doordoors s are are cloclosed.sed. Progressive interlocking, door to door, shall not be used. Progressive interlocking, door to door, shall not be used. **E3.10.3

**E3.10.3All doors on multiple-door enclosures shall beAll doors on multiple-door enclosures shall be int

interlerlocockeked d sisimumultaltaneneououslsly y wiwith th the the dodoor or whwhicich h isis interlocked with the main line disconnecting means. interlocked with the main line disconnecting means. Ex

Exceceptptioion n NoNo. . 1. 1. WhWhen en the the didiscsconnonnecectiting ng memeans ans isis se

sepapararatetely ly momoununteted, d, it it shshalall l bbe e memechchananicicalally ly or or electrically interlocked with the control e

electrically interlocked with the control e nclosure door(s).nclosure door(s). Ex

Exceceptptioion n NoNo.2.2: : The The intintererlolock ck reqrequiruirememenents ts of of thithiss paragraph do not apply to industrial equipment such as paragraph do not apply to industrial equipment such as electric power for resistance welders or electric furnaces electric power for resistance welders or electric furnaces unless specified by the purchaser. However, it does apply unless specified by the purchaser. However, it does apply to motor control for such apparatus.

to motor control for such apparatus.

**E3.10.4

**E3.10.4 MecMechanihanical cal inteinterlorlockicking ng shalshall l be be proprovidvideded bet

betweeween n the the discdisconnecting means onnecting means and and its its assoassociateciated d door door to accomplish both of the

to accomplish both of the followfollowing:ing:

(1) Prevent closing of the disconnecting means while the (1) Prevent closing of the disconnecting means while the enclosure door is open, unless an interlock is operated, enclosure door is open, unless an interlock is operated, and

and

(2) Prevent closing of the disconnecting means while the (2) Prevent closing of the disconnecting means while the do

door or is is in in the initithe initial al latlatch ch poposisitition on or or untuntil il the door the door hardware is fully engaged

hardware is fully engaged E3.11 Operating Handle. E3.11 Operating Handle. E3.1

E3.11.1 1.1 LocLocatioation.n. TThhe e ooppereraattining g hahandndlle e oof f ththee dis

disconnconnectecting ing meanmeans s shalshall l be be readreadily ily accaccesessibsible. le. TheThe center of the grip, when in its highest position, shall not center of the grip, when in its highest position, shall not be more than 6 1/2 feet above the floor and should not be be more than 6 1/2 feet above the floor and should not be

lower than

lower than 3 feet above the floor .3 feet above the floor . **E3.11.1.1

**E3.11.1.1 The operating handle shall be mounted onThe operating handle shall be mounted on the front of the control compartment or enclosure, not on the front of the control compartment or enclosure, not on a door.

a door. *E3.11.2

*E3.11.2 LLoockckining. g. ThThe e ooppereratatining g hahandndle le oof f ththee disconnecting means shall be so arranged that it may be disconnecting means shall be so arranged that it may be locked in the “OFF" position. Provision shall be made for locked in the “OFF" position. Provision shall be made for a minimum of three locks having shackles 0.375 inch in a minimum of three locks having shackles 0.375 inch in diameter.

diameter. *E3.11.3

*E3.11.3 Position IndicationPosition Indication. The operating handle . The operating handle shallshall plainly indica

plainly indicate at te at all times all times whethwhether er the the discdisconnectionnectingng means is in

means is in the open or closed position. (See E 3.5)the open or closed position. (See E 3.5) **E3.11.4

**E3.11.4 LLinkage.inkage. MeMechanichanical cal linklinkage age bebetwtween een thethe disc

disconnectionnecting means ng means and its and its operaoperating handle ting handle shall be 12shall be 12 in

inchches es or or leless ss in in lelengngth th anand d shshalall l be sucbe such h thathat t ththee op

operaterating ing handlhandle e is in is in cocontrontrol l of the of the disdisconconnecnect t at at allall times.

times.

E4. Protection E4. Protection *E4.1 Scope

*E4.1 Scope. . This sectThis section shall ion shall appapply to ly to all industrall industrialial equipm

equipment, ent, exceexcept pt benchbench-typ-type e machines poweremachines powered d by aby a single motor rated less than 1/4horsepower.

single motor rated less than 1/4horsepower. E4.2 General.

E4.2 General. E4.2.1

E4.2.1 FiFigugure re 4-4-1 1 shoshows ws tytypipicacal l cicircrcuituits s whwhicich h areare acceptable for protection

acceptable for protection of electrical systems.of electrical systems. *E4.2.2

*E4.2.2 Fuses for power and control shall be dual elementFuses for power and control shall be dual element types having a minimum interrupting capacity of 100.000 types having a minimum interrupting capacity of 100.000 am

ampepereres s at at rarateted d vvooltltagage. e. FFuuseses s shshalall l memeet et ththee performance standards outlined in NEMA Standard FU-1, performance standards outlined in NEMA Standard FU-1,

Lo

Low Vw Voltage Fuses. Fuse oltage Fuses. Fuse dimensidimensions ons shall shall confconform orm toto those listed for NEMA Class H.

those listed for NEMA Class H.

Exception: The interrupting capacity requirement does not Exception: The interrupting capacity requirement does not apply to fuses in the control circuit

apply to fuses in the control circuit below the main controlbelow the main control circuit protective device(s). Examples are those used for circuit protective device(s). Examples are those used for pr

prototecectition on of of indindivivididual ual sosolelenonoidids s and and smsmalall l susub- b-assemblies.

assemblies. E4

E4.3 .3 MaMain in anand d BrBrananch ch CiCirrcucuit it OvOvererccururrerentnt Protection.

Protection. E4.3.1

E4.3.1The main overcurrent protection shown in line “C"The main overcurrent protection shown in line “C" of Figure 4-1, Typical Diagrams, Columns 1 through 4 of Figure 4-1, Typical Diagrams, Columns 1 through 4 inclusive, may or may not be furnished as part of the inclusive, may or may not be furnished as part of the electrical system as specified In E 3.2. Where furnished as electrical system as specified In E 3.2. Where furnished as par

part t of the of the sysystestem, m, it it shalshall l conconsissist t of a of a singsingle le circircuicuitt breaker or set of fuses, and the nameplate shall bear the breaker or set of fuses, and the nameplate shall bear the

marking required in E 2.10.1.3. marking required in E 2.10.1.3. E4.3.2

E4.3.2 AdditAdditional Overcurrent Protecional Overcurrent Protection. On tion. On a a machinemachine wi