Information Bulletin: BC Electrical Code Section 76 -Temporary Wiring

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Technologies

Technologies
Reference number
IB-EL 2011-01

The Information Bulletin IB-EL 2011-01 was issued to supplement Directive D-EL 2011-01 issued on September 28, 2011. The information bulletin provides guidance in the application of Section 76 - Temporary Wiring.

This Information Bulletin supplements directive D-EL 2011-01 issued on 28th September 2011.

The following bulletin provides guidance on the application of policy for the BC Safety Authority. Please check with municipal authorities having jurisdiction for their requirements.

Scope

As outlined in Rule 76-000 of the BC Electrical Code, Section 76 applies to temporary wiring installations for buildings under construction or demolition. It is the nature of the installation, not the use of that installation, that determines whether the installation is temporary. Receptacles that are connected to the permanent wiring system and therefore not within the scope of Section 76 are subject to other applicable rules of the BC Electrical Code Temporary distribution panels are not considered permanent and are therefore subject to the rules in Section 76.

Receptacles

Where construction sites utilize temporary wiring methods, this wiring is exposed to more severe duty and weather conditions than permanent installations. The use of extension cords may increase bonding conductor impedance. Additionally, site and environmental conditions may make grounding conditions unstable. These factors can result in an increased risk of electrical shock to workers. For this reason, Rule 76-016 requires GFCI protection for 15 A (configuration 5-15R) and 20 A (configuration 5-20R) receptacles installed on temporary wiring installations.

Permanently installed receptacles do not require GFCI protection (per Rule 76-010) even though they may be energized for use during construction (Appendix I of the BC Electrical Code). All receptacles in outdoor locations must be weather protected as required in Rule 26-702. Outdoor receptacles in residential occupancies must also be GFCI protected (see Rule 26-710).

WorkSafe BC Assured Grounding Program

Contractors may wish to use an assured grounding program as per OHS Regulation Guidelines Part 19

– G19.15(1) (See WorksafeBC.com and Worksafe BC publication Working Safely Around Electricity for further details on the Assured Grounding Program). The BC amendment to Rule 76-016 requires the use of GFCI receptacles for 15 A (configuration 5-15R) and 20 A (configuration 5-20R) receptacles installed on temporary wiring installations, except by special permission. For permits issued by the BCSA, special permission to use an assured grounding program, as an alternative to GFCI protection, will be granted. Special permission for an assured grounding program will only be granted for Contractor Temporary Construction Service permits.

To obtain special permission, the BC Safety Authority requires the electrical contractor to declare on the installation permit (at time of application) the intent to use the WorkSafe BC Assured Grounding Program, and a copy of the WorkSafe BC Notice of Project listing the choice to use assured grounding must be posted at the service location. The contractor must submit a copy of the Notice of Project to the BC Safety Authority prior to service connection.

Where a change from GFCI protection to the Assured Grounding Program, or where the Assured Grounding Program is discontinued after the Contractor Temporary Construction Service permit has been obtained, the contractor must apply for a permit amendment and indicate the change on the amended permit. A new or revised Notice of Project form must be posted at the service location. If requested by a Safety Officer, the contractor must provide a copy of the Notice of Project to the BC Safety Authority.