Ontario Electrical Safety Code 25 th Edition/ 2012

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Ontario Electrical Safety Code

25

^th

Edition/ 2012

Ted Olechna

Director, Codes and Standard Chief Engineer

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What I Will Cover

• ESA’s role is as the regulator

• Highlight of 2012 Code changes

• The Code and new Green technology

• Ontario differences

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Electrical Safety Authority

Bill 35, the Electricity Act, 1998

Section 113 (1) The Electrical Safety Authority, subject to the approval of the Lieutenant Governor in

Council, may make regulations,

- prescribing the design, construction, installation, protection, use, maintenance, repair, extension,

alteration, connection and disconnection of all works and matters used or to be used in the generation,

transmission, distribution, retail or use of Electricity in Ontario;

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Electrical Safety Authority Mission and Vision

• Our Mission:

To Improve electrical safety for the well being of the people of Ontario.

• Long Term Vision:

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Regulations

• OESC is mandatory

• The OESC is passed into law by the Provincial Government

• Utility Regulations

²⁰⁰⁴

• Contractor Licensing

²⁰⁰⁵

• Product Safety

²⁰⁰⁷

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OESC 2012

Major changes

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CEC CODE changes

273 proposals were submitted to the CSA

• 175 proposals

• 10 new interpretations

are approved and in the new edition Ontario amendments

• 11* Ontario amendments are changed; plus

• Rule 2-005, An application for inspection not required is amended (to be finalized in Fall 2011)

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Basic Exemption - proposed

The following are the changes under consideration:

• Modify the existing Rule to include owner occupied dwelling unit when the work is performed by a licensed electrical contractor;

• New amendment to allow unit owners to replace certain light fixtures &

switches within an Owner-Occupied Single Dwelling;

• New amendment to permit wiring from approved class 2 extra low voltage power supply within an Owner-Occupied Dwelling Unit;

• New amendment to allow the replacement or connection of specific listed appliances by specific trades, in accordance to their designation, within an owner-occupied dwelling; and

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OESC 2012

Major changes

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General

• Cable Ampacity – Tables 1 to 4

• Temperature Limitations

• Overcurrent protection for No. 14, 12 and 10AWG conductors

• Grounding conductor size for AC systems

• Cablebus installation

• Tamper resistant receptacles

• Receptacle(s) on a roof top for equipment maintenance

• Receptacles exposed to the weather

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OESC 2012

Major changes

Green Energy Installations

• Renewable energy systems – New Section 64

• Solar photovoltaic systems – Section 50 changes

• Electric vehicle charging infrastructure

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Electric Vehicle Charging Systems

Code Sections 2,8,26 and 86

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Ontario Amendment

Appendix B note to Rule 2-000(h)

• New Appendix B note to Rule 2-000(h)

For electrical vehicles;

This Code applies to electrical vehicle supply equipment and requires it to be approved and installed in accordance with applicable Code requirements.

This Code does not apply to the inlet or on-board charging

equipment as defined by Rule 86-100 that does not provide bi- directional power feed, as specified by Rule 86-308.

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Demand factors for EV equipment

Rule 8-200(1)(a) and (3)

When determining the minimum ampacity of service or feeders conductors supplying:

• a single dwelling, any electric vehicle charging equipment loads shall be considered with a demand factor of 100%.

– New Rule 8-200(1)(a)(vi)

• in apartment and similar building shall be added with a demand factor of 100%

– New Rule 8-202(3)(d)

• As required by the Building Code

• The electric vehicle charging equipment loads shall not exceed 80% of the rating of the overcurrent device, Rule 8-104(5).

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A typical single family dwelling with 2000 ft² (186 m²) of living area:

Demand factors for EV equipment

Rule 8-200(1)(a) and (3) Demand factors in a single dwelling

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Electric vehicle systems

Rule 86-306 Receptacles for charging equipment

• Amended Rule 86-306(1)(a)

(1) Each receptacle for the purpose of electric vehicle charging shall be labeled in a conspicuous, legible, and permanent manner identifying it as an electric vehicle charging receptacle and shall be

(a) a single receptacle of CSA configuration 5-20R supplied from a 125 V branch circuit rated not less than 20 A; or

(b) of the appropriate CSA configuration in accordance with Diagram 1 or 2 when

supplied from a branch circuit rated at more than 125V or more than 20 A.

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Electric vehicle systems

Rule 86-400(3) EV charging sites in commercial garages

• New Rule 86-400(3) (similar to new Rule 86-308(4))

Charging equipment installed in commercial garages or on premises of flammable liquid and gas dispensing and

service facilities described in Section 20 shall comply with Rule 20-114 and shall not be located in the hazardous area as described in Rule 20-102.

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Electric vehicle systems

Rule 86-404 Height of vehicle charging equipment

• New Rule 86-404

The height of the electric vehicle

charging equipment shall be located at a height of not less than 450mm and not more than 1.2m above the floor level.

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Solar Photovoltaic installations

Section 50

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Agenda

• Changes/additions to existing Rules

– Marking

– PV source and output circuit voltage – PV circuit current rating

– Overcurrent protection – Wiring methods

– Attachment plug

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Agenda

• New Rules and requirements:

– Voltage drop

– AFCI protection for DC circuits – Grounding

– Inverter

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Rule 50-014

Photovoltaic dc arc-fault circuit protection

It is the direction in Ontario that DC AFCI will not be required until May 1

^st

, 2013

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Rule 50-018 – Wiring methods

(Amended)

Newly developed Solar cables type RPV & RPVU – in Part II Standard

A new standard CSA C22.2 No.

271 (published May 2011),

Photovoltaic Cables specifies the requirements for photovoltaic single-conductor and multi-

conductor thermoset-insulated wires and cables rated 600 V, 1000 V and 2000 V.

The standard applies to

conductors installed between

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New cables type RPV and RPVU are also recognized in Tables 6, 10B and 19

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Rule 50-018 – Wiring methods

(Amended)

Newly developed Solar cables type RPV & RPVU – Part I Standard tables

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Rule 50-020 – Attachment Plugs

^(Amended)

• Used to be 50-016, renumbered to fit.

• New Subrule (2) added to require the attachment plugs to be of a type that requires the use of a

tool to open, when:

• Readily accessible; and

• Used in circuits operating at over 30V

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Only inverters and AC modules

approved and identified as

interactive shall be permitted in

interactive systems.

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Rule 50-028 – Power Conditioning Unit

(New rule) – Utility Interactive systems, Inverters approved for the purpose

This is existing direction in Ontario as per current Bulletin 84-1-*

64-108 Connection to other sources

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64-112 Unbalanced interconnection

1) Single-phase inverters and AC modules in

interactive renewable energy systems shall not be connected to 3-phase systems, unless the interconnected system:

a) Is designed to provide

balanced 3-phase output;

b) Complies with Rules 84- 008 and 84-018; and

Rule 50-028 – Power Conditioning Unit

(New rule) – Multiple 1-phase inverters form 3-phase interactive system

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Renewable energy systems

Code Sections 64

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Special terminology

Rule 64-002

• Renewable Energy.

• energy derived from resources that are

naturally replenished, such as sunlight, wind,

water, tides, and geothermal heat.

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Special terminology .

Rule 64-002 Renewable

Energy System

• a complete system enabling a

renewable energy source to be

connected to a

utilization load.

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Small wind systems

Rule 64-002

Special Terminology

• Small wind

system. A system consisting of one or more wind

turbines with a

rated output up

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Large wind systems

Rule 64-002 Special Terminology

• a system consisting of one or more wind

turbines with rated power output

exceeding 100 KW

rated power output.

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Stationary Fuel Cell

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MICRO-HYDROPOWER SYSTEMS

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Hydrokinetic system

• a system operating as an interconnected or stand-alone

system and consisting of one or more hydrokinetic turbines that convert the kinetic energy of flowing water into electrical energy with a rated output of up to and including100 kW.

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STORAGE BATTERIES

RULE 64-700 – 64-714

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General

Rule 64-010 Overcurrent protection

• Where a circuit breaker is backfed (“LOAD” to “LINE”

rather than “LINE” to “LOAD”) it shall be approved for the purpose.

• Circuit breakers labelled “LINE” and “LOAD” are not

approved to be backfed.

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General

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General

Rule 64-028 Interconnections to other circuits

Where the renewable energy system is not intended to be interconnected with the supply authority the system shall be

designed so that it is impossible to have both systems connected at the same time.

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General

Rule 64-030 Interconnected system connections

(1) The output from a utility-interactive inverter or power

conditioner shall be connected to the line side of the service disconnecting means in accordance with Section 84, except as permitted in Subrule (3).

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General

Rule 64-030 Interconnected system

connections Cont’d

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General

Rule 64-034 Systems in access of 750 V dc

Where the maximum system voltage of a renewable energy

source exceeds 750 V dc it shall comply with the requirements of Section 36 and any other requirements applicable to these

installations.

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Other Code changes

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Receptacles “General”

26-700 Tamper resistant requirements

New Subrule 26-700 (12) Tamper resistant

receptacles now

required in “child care

facilities”

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Rule 26-702 is amended to require 15A and 20A (125V and 240V) receptacles exposed to weather to be provided with cover plates suitable for “wet locations” that will provide shielding with and without a plug inserted into the

receptacle.

Receptacles “General”

26-702 Receptacles exposed to weather

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Rule 26-702 (1) & (2)

Receptacles “General”

26-702 Receptacles exposed to weather

As per Rule 26-702(2)

Requires to be marked “WET

Locations” whether or not a plug is inserted into it.

As per Rule 26-702(1)

Requires to be marked “Wet Location Only When Cover Closed”

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Installation of lighting equipment

30-308 Circuit connections

Amended Subrule 30-308(4)

Fluorescent luminaire disconnect means.

(4) The connection of branch circuit conductors

exceeding 150 volts-to-ground to the conductors of

each fluorescent luminaire utilizing double-ended

lamps shall be made by one of the following ways;

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Administrative

Rule 2-022(3) Approval of LED luminaires

• New Rule 2-022(3)(c)(ii)

Luminaires with LED lamps supplied from a class 2 powers supply are

required to be approved.

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Administrative

Rule 2-022 Approval of LED luminaries

• New Appendix B note to Rule 2-022(3)(c)

Decorative light strings, signs or displays with LED lamps other than LED

luminaries that are connected to

approved class 2 power supplies are not required to be approved.

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Wiring methods

Rule 32-102(1) Use of rigid non-metallic conduit in fire alarm systems

• Amended Rule 32-102(1)

Conductors of a fire alarm systems are now permitted to be installed in rigid non- metallic conduit without being embedded in 50mm of masonry (as per current ESA Bulletin 32-3-*)

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• Amended Rule 46-108(1)

Conductors described in Rule 46-108 (Life Safety, Emergency etc.) are now permitted to be installed in rigid non-metallic conduit without being

embedded in 50mm of

masonry (as per current ESA

Wiring methods

Rule 46-108(1) Use of rigid non-metallic conduit in life safety systems

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New Cable types in Tables 11, 12 and 19

Table 19, Armoured cable types ACG & ACGWU

• ACG90— a 14 AWG to 6 AWG multi-conductor aluminum interlocked armoured cable with aluminum bonding

conductor in intimate contact with armour designed for

applications permitting the use of the armour as a means of equipment bonding.

• ACGWU90 — Same construction as the ACG90 with the addition of the overall jacket.

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New Cable types in Tables 11, 12 and 19

Table 19, Cable Type ACG & ACGWU

The construction of ACG & ACGWU cables incorporates a full size aluminum bond conductor in direct intimate contact with the interlocked armour.