Directive: Supervision requirements under electrical installation permits
This Directive is being issued by a provincial safety manager pursuant to section 30 of the Safety Standards Act.
This Directive supersedes Directive D-E3 041112 7 and its Addendum D-E3 041112 7A issued on November 12, 2004 and December 9, 2004 respectively.
This Directive is being issued to clarify the application of section 12 of the Electrical Safety Regulation (ESR). Supervision ratios apply to regulated work performed under electrical installation permits only. A ratio of 1 supervisor to 4 individuals applies to electrical work where the installation is derived from a 3 wire 120 /240 volt grounded neutral system, if the rating of the main service equipment does not exceed 200 amps. In any other case, a ratio of 1 supervisor to 1 or 2 trainees applies.
Under section 5 of the Safety Standards General Regulation (SSGR), individuals who would otherwise require a certificate or authorization to perform regulated work, may do so if appropriately supervised.
In order to supervise electrical work, a supervisor must be specifically authorized to perform electrical work as per section 4(3) of the ESR. Only certified electricians may supervise individuals who would otherwise require authorization to perform regulated work. A supervisor cannot supervise any individual beyond the scope of the supervisor’s certificate or qualification.
Section 12(2)(a) provides a ratio of 1 supervisor to 4 individuals for electrical installations derived from a 3 wire 120 /240 volt grounded neutral system, if the rating of the main service equipment does not exceed 200 amps. This scope of work is generally described as C class electrical work. In this case, an individual is a supervised worker who could not otherwise perform regulated work.
Section 12(2)(b) provides a ratio of 1 supervisor to 2 “trainees” for electrical installations other than those included in section 12 (2)(a). This scope of work is generally described as A or B class electrical work. A trainee is a person registered in a recognized program under the Industry Training Authority Act.
Provincial Safety Manager, Electrical
Bill 19 – 2003 Safety Standards Act
B.C. Reg. 100/2004 Electrical Safety Regulation
B.C. Reg. 105/2004 Safety Standards General Regulation
Electrical Safety Regulation
Individuals who may perform electrical work
4(3) For the purposes of section 5 of the Safety Standards General Regulation or
section 12 of this regulation, only an individual referred to in subsection (1) (a),
(b), (c) or (f) of this section is authorized to supervise a person to do electrical
Supervision ratios under installation permits
12 (1) In this section:
"main consumer service" has the same meaning as in the Canadian Electrical Code;
"trainee" means a trainee under the Industry Training Authority Act.
(2) For the purposes of doing regulated work under an installation permit for electrical equipment in which the field safety representative named in the permit is a person who holds a certificate of qualification of class A, B or C, a person authorized to supervise under section 4 (3) may supervise
(a) up to 4 individuals for installations derived from a 3 wire 120/240 volt grounded neutral system, if the rating of the main consumer service equipment does not exceed 200 amps, or
(b) in any other case, 1 or 2 trainees.
(3) For the purposes of doing regulated work under an installation permit for electrical equipment in which a field safety representative of any class other than class A, B or C is named on the installation permit, the field safety representative may supervise only one or two individuals.
Safety Standards General Regulation
Regulated work done under supervision
5 (1) Despite section 4, an individual may do regulated work for which
specific qualifications would be required under the Act if the individual is supervised by
a person who
(a) is specifically authorized under the Act to perform that type of work, and
(b) supervises the individual on site and provides guidance and assistance to
the individual as the regulated work is performed.
(2) A person who supervises the work of an individual under subsection (1) must not do any
of the following:
(a) allow that individual to perform regulated work outside of the scope of the
(b) supervise a number of individuals in excess of any ratios of supervision
established under the regulations.