PART XXVI ELECTRICAL OPERATIONS — Low voltage electrical equipment - ground fault interrupters
489
(1) When used outdoors or in a wet or damp location, portable electrical equipment shall be protected by an approved, CSA Certified, ground fault circuit interrupter.
489(2)
A ground fault circuit interrupter shall not be used as a substitute for grounding.
Not legal advice. Verify the cited article against the signed agreement.