BC Electrical Code Section 2 General Rules
This Directive is being issued by a provincial safety manager pursuant to section 30 of the Safety Standards Act.
This Directive supersedes Directive D-EL 2013-01.
Rule 2-304 Disconnection (See Appendix B)
(1) No repairs or alterations shall be carried out on any live equipment except where complete disconnection of the equipment is not feasible.
This rule is interpreted as meaning that electrical work may only be carried out in a de-energized state, unless it can be demonstrated that the task to be performed is not possible in a de-energized state.
B.C. Reg. 100/2004 Electrical Safety Regulation