Notes to Part 3 Building Envelope
4.2.1. Interior Lighting Power
4.2.1.1. Exit Signs
1) Power requirements for lighting units for internally illuminated exit signs shall conform to CAN/CSA-C860, “Internally Lighted Exit Signs.”
4.2.1.2. Fluorescent Lamp Ballasts
1) Fluorescent lamp ballasts shall conform to CSA C654, “Fluorescent Lamp Ballast Efficacy Measurements.”
2) Electronic fluorescent lamp ballasts that are not within the scope of CSA C654,
“Fluorescent Lamp Ballast Efficacy Measurements,” shall conform to ANSI_ANSLG
National Energy Code of Canada for Buildings 2017 Division B 4-1
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4.2.1.3. Division B
C82.11, “American National Standard for Lamp Ballasts–High-Frequency Fluorescent Lamp Ballasts.”
4.2.1.3. Limits to Installed Interior Lighting Power (See Note A-4.2.1.3.)
1) The installed interior lighting power described in Article 4.2.1.4. shall not exceed the value of the interior lighting power allowance determined using
a) the building area method described in Article 4.2.1.5., or b) the space-by-space method described in Article 4.2.1.6.
2) The individual power allowances in each space of the building do not have to be met, provided the total installed interior lighting power is not exceeded.
3) Only one of the methods described in Sentence (1) shall be selected for use within the same building.
4.2.1.4. Determination of the Installed Interior Lighting Power
1) Except as provided in Sentences (4) and (5), the installed interior lighting power shall include all power used by the luminaires, including lamps, ballasts, transformers, and control devices.
2) The determination of the installed interior lighting power shall include
a) connected lighting power for both permanently installed interior lighting and supplemental interior lighting provided by movable or plug-in luminaires, and
b) in cases where two or more independently operating lighting systems in a space are controlled to prevent simultaneous operation, the lighting system with the highest wattage.
(See Note A-4.2.1.4.(2).)
3) Luminaire wattage to be included in installed interior lighting power shall be determined in accordance with the following criteria:
a) except as provided in Clause (b), the wattage of luminaires shall be the design operating input wattage of the lamp/auxiliary combination based on values provided by a recognized testing laboratory or, in the absence of such information, the maximum labeled wattage of the luminaire shall be used (see Note A-4.2.1.4.(3)(a)),
b) the wattage of luminaires with ballasts designed for multiple wattages shall be the maximum labeled wattage of the luminaire,
c) for line-voltage lighting track and plug-in busway designed to allow the addition and/or relocation of luminaires without altering the wiring of the system, the wattage shall be
i) the specified wattage of the luminaires included in the system with a minimum of 98 W/m,
ii) the wattage limit of the system's circuit breaker, or iii) the wattage limit of other permanent current-limiting
device(s) on the system,
d) the wattage of low-voltage lighting track, cable conductor, rail conductor, and other flexible lighting systems that allow the addition and/or relocation of luminaires without altering the wiring of the system shall be the specified wattage of the transformer supplying the system, and
e) the wattage of all other miscellaneous lighting equipment shall be the specified wattage of the lighting equipment.
4) Lighting for the following functions, spaces or equipment need not be included in the calculation of installed interior lighting power:
a) display or accent lighting that is an essential element for the function it performs in galleries, museums, and monuments,
b) lighting that is integral to equipment or instrumentation and is installed by its manufacturer,
c) lighting specifically designed for use only during medical or dental procedures,
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Division B 4.2.1.5.
d) lighting integral to both open and glass-enclosed refrigerator and freezer cases,
e) lighting integral to food warming and food preparation equipment, f) lighting for plant growth or maintenance,
g) lighting in retail display windows, provided the display area is enclosed by ceiling-height partitions,
h) lighting in interior spaces that have been specifically designated as a registered interior historic landmark,
i) lighting that is an integral part of advertising or directional signage, j) exit signs,
k) lighting that is for sale or for lighting educational demonstration systems, l) lighting for theatrical purposes, including performance, stage, and film
and video production,
m) lighting for television broadcasting in sporting activity areas, n) casino gaming areas,
o) mirror lighting in dressing rooms, and
p) accent lighting in religious pulpit and choir areas.
5) Lighting for functions, spaces or equipment need not be included in the calculation of installed interior lighting power where it can be shown that its inclusion will adversely affect the intended functions or the use of the space or equipment.
4.2.1.5. Calculation of Interior Lighting Power Allowance Using the Building Area Method
(See Note A-4.2.1.5.)
1) Calculation of interior lighting power allowance using the building area method as provided in this Article may be applied only where
a) the interior lighting power allowance is being determined for an entire building, and
b) the building type or an equivalent building type is identified in Table 4.2.1.5.
2) Except as provided in Sentence (3), interior lighting power allowance calculations shall be based on the primary use for which the building is intended.
3) Where 10% or more of the gross lighted area of the building can be classified as being of a building type other than the principal type for the building, the interior lighting power allowance shall be calculated using the space-by-space method described in Article 4.2.1.6.
4) Where the building is of a type other than those listed in Table 4.2.1.5. and no equivalent building type can be selected, the interior lighting power allowance shall be calculated using the space-by-space method described in Article 4.2.1.6.
5) The interior lighting power allowance using the building area method shall be calculated by multiplying the lighting power density, in W/m2, for the building type provided in Table 4.2.1.5. by the gross lighted area, in m2.
Table 4.2.1.5.
Lighting Power Density by Building Type for Use with the Building Area Method Forming Part of Sentences 4.2.1.5.(1), (4) and (5)
Building Type Lighting Power Density, W/m2
Automotive facility 7.6
National Energy Code of Canada for Buildings 2017 Division B 4-3
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4.2.1.6. Division B
Table 4.2.1.5. (Continued)
Building Type Lighting Power Density, W/m2
Exercise centre 7.0
Fire station 5.7
Gymnasium 7.3
Health care clinic 8.8
Hospital 11.3
Hotel/Motel 8.1
Library 8.4
Manufacturing facility 9.7
Motion picture theatre 8.9
Multi-unit residential building 7.3
Museum 11.4
Office 8.5
Penitentiary 8.1
Performing arts theatre 12.7
Police station 8.6
Post office 7.2
Religious building 10.1
Retail area 11.4
School/university 8.7
Sports arena 9.4
Storage garage 1.6
Town hall 8.6
Transportation facility 6.6
Warehouse 5.2
Workshop 9.7
4.2.1.6. Calculation of Interior Lighting Power Allowance Using the Space-by-Space Method
1) The interior lighting power allowance using the space-by-space method shall be determined as follows:
a) the gross interior floor area of each enclosed space shall be determined based on the inside dimensions of the space,
b) the allowed lighting power density (LPD) for each enclosed space shall be determined using Table 4.2.1.6. for the exact space type or a space type that most closely represents the proposed use of each space,
c) the lighting power allowance for each enclosed space shall be calculated by multiplying the floor area determined in Clause (a) by the allowed LPD determined in Clause (b), and
d) the interior lighting power allowance for the entire building shall be calculated by summing the lighting power allowances of all enclosed spaces determined in Clause (c).
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Division B 4.2.1.6.
Table4.2.1.6. LightingPowerDensityUsingtheSpace-by-SpaceMethodandMinimumLightingControlRequirements FormingPartofSentences4.2.1.6.(1),4.2.2.1.(2),(3),(6),(8),(9),(10),(13),(16),(18)and(20),4.3.1.3.(5),4.3.3.2.(1)and8.4.4.5.(8) TypeofLightingControl(1) SpaceTypeLightingPower Density,W/m2Manual[see 4.2.2.1.(3)]
Restricted toManual ON[see 4.2.2.1.(6)]
Restricted toPartial Automatic ON(2)[see 4.2.2.1.(8)]
Bi-Level[see 4.2.2.1.(9)]
Automatic Daylight Responsive Controlsfor Sidelighting [see 4.2.2.1.(10)](3)
Automatic Daylight Responsive Controlsfor Toplighting [see 4.2.2.1.(13)](4)
Automatic Partial OFF[see 4.2.2.1.(16)]
AutomaticFull OFF(5)[see 4.2.2.1.(18)]
Scheduled Shut-off[see 4.2.2.1.(20)] CommonSpaceTypes(6) Atrium <6minheight1.06perm (height)XAA–XX–BB ≥6mand≤12min height1.06perm (height)XAAXXX–BB >12minheight4.3+0.71 perm(height)XAAXXX–BB Audienceseatingarea– permanent forauditorium6.8XAAXXX–BB forconventioncentre8.8XAAXXX–BB forgymnasium7.0XAAXXX–BB formotionpicture theatre12.3XAAXXX–BB forpenitentiary3.0XAA–XX–BB forperformingarts theatre21.8XAAXXX–BB forreligiousbuilding16.5XAAXXX–BB forsportsarena4.6XAA–XX–BB other4.6XAA–XX–BB Bankingactivityareaand offices9.3XAAXXX–BB Classroom/Lecture hall/Trainingroom forpenitentiary14.4XAAXXX–X– other10.3XAAXXX–X–
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4.2.1.6. Division B
Table4.2.1.6.(Continued) TypeofLightingControl(1) SpaceTypeLightingPower Density,W/m2Manual[see 4.2.2.1.(3)]
Restricted toManual ON[see 4.2.2.1.(6)]
Restricted toPartial Automatic ON(2)[see 4.2.2.1.(8)]
Bi-Level[see 4.2.2.1.(9)]
Automatic Daylight Responsive Controlsfor Sidelighting [see 4.2.2.1.(10)](3)
Automatic Daylight Responsive Controlsfor Toplighting [see 4.2.2.1.(13)](4)
Automatic Partial OFF[see 4.2.2.1.(16)]
AutomaticFull OFF(5)[see 4.2.2.1.(18)]
Scheduled Shut-off[see 4.2.2.1.(20)] Computer/Serverroom14.3XAAXXX–BB Conference/Meeting/ Multi-purposeroom11.5XAAXXX–X– Confinementcell8.7XAAXXX–BB Copy/Printroom6.0XAAXXX–X– Corridor/Transitionarea forhospital9.9X–––XXBBB formanufacturingfacility3.1X–––XXXBB forspacedesigned toANSI/IESRP-28 (andusedprimarilyby residents)
6.9X–––XXXBB other7.1X–––XX–BB Courtroom15.0XAAXXX–BB Diningarea forbarlounge/leisure dining10.0XAAXXX–BB forcafeteria/fastfood dining6.8XAAXXX–BB forfamilydining7.6XAAXXX–BB forpenitentiary10.3XAAXXX–BB forspacedesigned toANSI/IESRP-28 (andusedprimarilyby residents)
21.5XAAXXX–BB other6.8XAAXXX–BB Dressing/Fittingroomfor performingartstheatre6.6XAAXXX–X– Electrical/Mechanicalroom4.6X–––XX–––
4-6 Division B National Energy Code of Canada for Buildings 2017
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Division B 4.2.1.6.
Table4.2.1.6.(Continued) TypeofLightingControl(1) SpaceTypeLightingPower Density,W/m2Manual[see 4.2.2.1.(3)]
Restricted toManual ON[see 4.2.2.1.(6)]
Restricted toPartial Automatic ON(2)[see 4.2.2.1.(8)]
Bi-Level[see 4.2.2.1.(9)]
Automatic Daylight Responsive Controlsfor Sidelighting [see 4.2.2.1.(10)](3)
Automatic Daylight Responsive Controlsfor Toplighting [see 4.2.2.1.(13)](4)
Automatic Partial OFF[see 4.2.2.1.(16)]
AutomaticFull OFF(5)[see 4.2.2.1.(18)]
Scheduled Shut-off[see 4.2.2.1.(20)] Emergencyvehiclegarage4.4XAA–XX–BB Foodpreparationarea11.4XAAXXX–BB Guestroom8.3SeeSentence4.2.2.6.(2) Laboratory forclassroom12.9XAAXXXXBB other15.6XAAXXX–BB Laundry/Washingarea4.6XAAXXX–BB Loadingdock–interior6.2XAA–XX–BB Lobby forelevator7.3X–––XX–BB forhotel11.4X–––XX–BB formotionpicture theatre4.8X–––XX–BB forperformingarts theatre18.3X–––XXXBB forspacedesigned toANSI/IESRP-28 (andusedprimarilyby residents)
21.8X–––XXXBB other10.8X–––XXXBB Lockerroom5.2XAAXXX–X– Lounge/Breakroom forhealthcarefacility8.4XAAXXX–X– other6.7XAAXXX–X– Office enclosed,≤25m210.0XAAXXX–X– enclosed,>25m210.0XAAXXX–BB
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4.2.1.6. Division B
Table4.2.1.6.(Continued) TypeofLightingControl(1) SpaceTypeLightingPower Density,W/m2Manual[see 4.2.2.1.(3)]
Restricted toManual ON[see 4.2.2.1.(6)]
Restricted toPartial Automatic ON(2)[see 4.2.2.1.(8)]
Bi-Level[see 4.2.2.1.(9)]
Automatic Daylight Responsive Controlsfor Sidelighting [see 4.2.2.1.(10)](3)
Automatic Daylight Responsive Controlsfor Toplighting [see 4.2.2.1.(13)](4)
Automatic Partial OFF[see 4.2.2.1.(16)]
AutomaticFull OFF(5)[see 4.2.2.1.(18)]
Scheduled Shut-off[see 4.2.2.1.(20)] openplan8.7XAAXXX–BB Pharmacyarea14.4XAAXXX–BB Salesarea(7)13.1XAAX–X–BB Seatingarea–general4.6XAA–XX–BB StairwayTheLPDandlightingcontrolrequirementsforastairwayshallbethesameasthoseforthespacecontainingthestairway. Stairwell6.2X––XXXXBB Storagegarage–interior1.5SeeArticle4.2.2.2. Storageroom <5m210.4X––––––BB ≥5m2and≤100m26.8XAA–XX–X– >100m26.8XAA–XXXBB Vehiclemaintenancearea6.0XAAXXX–BB Washroom forspacedesigned toANSI/IESRP-28 (andusedprimarilyby residents)
13.1X–––XX–X– other9.1X–––XX–X– Workshop12.3XAAXXX–BB Building-SpecificSpaceTypes(6) Conventioncentre–exhibit space9.5XAAXXX–BB Dormitory–livingquarters5.8X–––––––– Firestation–sleeping quarters2.2X–––––––– Gymnasium/Fitnesscentre exercisearea5.4XAAXXX–BB
4-8 Division B National Energy Code of Canada for Buildings 2017
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Division B 4.2.1.6.
Table4.2.1.6.(Continued) TypeofLightingControl(1) SpaceTypeLightingPower Density,W/m2Manual[see 4.2.2.1.(3)]
Restricted toManual ON[see 4.2.2.1.(6)]
Restricted toPartial Automatic ON(2)[see 4.2.2.1.(8)]
Bi-Level[see 4.2.2.1.(9)]
Automatic Daylight Responsive Controlsfor Sidelighting [see 4.2.2.1.(10)](3)
Automatic Daylight Responsive Controlsfor Toplighting [see 4.2.2.1.(13)](4)
Automatic Partial OFF[see 4.2.2.1.(16)]
AutomaticFull OFF(5)[see 4.2.2.1.(18)]
Scheduled Shut-off[see 4.2.2.1.(20)] playingarea8.8XAAXXX–BB Healthcarefacility exam/treatmentroom18.1X––XXX–BB imagingroom11.4X––X–––BB medicalsupplyroom5.8SeeStorageRoomunderCommonSpaceTypesforapplicablecontrolrequirements. nursery10.8X––XXX–BB nurses'station8.7X––XXX–BB operatingroom23.4X––X–––BB patientroom6.7X––XXX–BB physicaltherapyroom9.0X––XXX–BB recoveryroom11.1X––XXX–BB Library readingarea8.8XAAXXX–BB stacks12.9XAAXXXXBB Manufacturingfacility detailedmanufacturing area10.0XAAXXX–BB equipmentroom7.0XAAXXX–BB extrahighbayarea(> 15mfloor-to-ceiling height)
11.3XAAXXX–BB highbayarea(7.5m to15mfloor-to-ceiling height)
8.1XAAXXX–BB lowbayarea(<7.5m floor-to-ceilingheight)10.3XAAXXX–BB Museum generalexhibitionarea11.3XAAXXX–BB
National Energy Code of Canada for Buildings 2017 Division B 4-9
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4.2.1.6. Division B
Table4.2.1.6.(Continued) TypeofLightingControl(1) SpaceTypeLightingPower Density,W/m2Manual[see 4.2.2.1.(3)]
Restricted toManual ON[see 4.2.2.1.(6)]
Restricted toPartial Automatic ON(2)[see 4.2.2.1.(8)]
Bi-Level[see 4.2.2.1.(9)]
Automatic Daylight Responsive Controlsfor Sidelighting [see 4.2.2.1.(10)](3)
Automatic Daylight Responsive Controlsfor Toplighting [see 4.2.2.1.(13)](4)
Automatic Partial OFF[see 4.2.2.1.(16)]
AutomaticFull OFF(5)[see 4.2.2.1.(18)]
Scheduled Shut-off[see 4.2.2.1.(20)] restorationroom9.2XAAXXX–BB Postoffice–sortingarea7.3XAAXXXXBB Religiousbuilding fellowshiphall5.9XAAXXX–BB worship/pulpit/choir area16.5XAAXXX–BB Retailfacility dressing/fittingroom5.4XAAX–X–X– mallconcourse9.7XAAXXX–BB SpacedesignedtoANSI/IES RP-28 chapel(usedprimarily byresidents)11.4XAAXXX–BB recreationroom(used primarilybyresidents)19.4XAAXXX–BB Sportsarena–playingarea ClassIfacility(8)26.6XAAXXX–BB ClassIIfacility(8)21.1XAAXXX–BB ClassIIIfacility(8)18.3XAAXXX–BB ClassIVfacility(8)12.2XAAXXX–BB Transportationfacility airportconcourse3.3XAA–XX–BB baggage/carouselarea4.8XAA–XX–BB terminalticketcounter6.7XAAXXX–BB Warehouse–storagearea
4-10 Division B National Energy Code of Canada for Buildings 2017
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Division B 4.2.1.6.
Table4.2.1.6.(Continued) TypeofLightingControl(1) SpaceTypeLightingPower Density,W/m2Manual[see 4.2.2.1.(3)]
Restricted toManual ON[see 4.2.2.1.(6)]
Restricted toPartial Automatic ON(2)[see 4.2.2.1.(8)]
Bi-Level[see 4.2.2.1.(9)]
Automatic Daylight Responsive Controlsfor Sidelighting [see 4.2.2.1.(10)](3)
Automatic Daylight Responsive Controlsfor Toplighting [see 4.2.2.1.(13)](4)
Automatic Partial OFF[see 4.2.2.1.(16)]
AutomaticFull OFF(5)[see 4.2.2.1.(18)]
Scheduled Shut-off[see 4.2.2.1.(20)] mediumtobulky palletizeditems3.8XAAXXXXBB smallhand-carried items(8)7.4XAAXXXXBB NotestoTable4.2.1.6.: (1)X:alllightingcontrolsmarkedwithan“X”mustbeimplementedinthisspacetype A/B:atleastoneofthelightingcontrolsmarkedwithan“A”andatleastoneofthosemarkedwitha“B”mustbeimplementedinthisspacetype –(dash):thislightingcontrolisnotrequiredtobeimplementedinthisspacetype (2)Controlsmeetingtherequirementsfor“PartialAutomaticON”inSentence4.2.2.1.(8)alsocomplywiththerequirementsfor“Bi-Level”lightingcontrolinSentence4.2.2.1.(9). (3)AutomaticDaylightResponsiveControlsforSidelightingarerequiredonlyundertheconditionsstipulatedinSentence4.2.2.1.(10). (4)AutomaticDaylightResponsiveControlsforToplightingarerequiredonlyundertheconditionsstipulatedinSentence4.2.2.1.(13). (5)Controlsmeetingtherequirementsfor“AutomaticFullOFF”inSentence4.2.2.1.(18)alsocomplywiththerequirementsfor“AutomaticPartialOFF”lightingcontrolinSentence4.2.2.1.(16). (6)Incaseswhereaspacetypeislistedbothasacommonspacetypeandabuilding-specificspacetype,therequirementsforthelattershallapply.SeeNoteA-Table4.2.1.6. (7)SeeSentence4.2.2.6.(1)forrequirementsonaccentlighting. (8)SeeNoteA-Table4.2.1.6.
National Energy Code of Canada for Buildings 2017 Division B 4-11