Canada Occupational Health and Safety Regulations

8.17 (1) No employee shall give a guarantee of isolation for the performance of a live test on isolated electrical equipment unless

• (a) any other guarantee of isolation given in respect of the electrical equipment for any part of the period for which the guarantee of isolation is given is terminated;

• (b) every person to whom the other guarantee of isolation referred to in paragraph (a) was given has been informed of its termination; and

• (c) any live test to be performed on the electrical equipment will not be hazardous to the health or safety of the person performing the live test.

(2) Every person performing a live test shall warn all persons who, during or as a result of the test, are likely to be exposed to a hazard.