Once we have determined the conductor or circuit part is de-energized, can we take off certain layers of the protective gear?
Good question . . . Yes . . usually. I will defer to the definition of an Arc Flash Hazard . . . “A dangerous condition associated with the possible release of energy caused by an electric Arc. FPN No. 1: An arc flash hazard may exist when energized electrical conductors or circuit parts are exposed or when they are within equipment in a guarded or enclosed condition, provided a person is interacting with the equipment in such a manner that could cause an electric arc . . .” NFPA 70E would expect the user, within the hazard approach boundary, to be wearing an level of protection appropriate to the hazard when de-energizing a system and voltage testing. If the electrical system has been de-energized and has been voltage tested to verify that it has been de-energized . . upstream and downstream . . . then it could be possible to remove the electrical gloves and Arc Flash clothing, if there is no other adjacent electrical hazard, in close proximity to the de-energized system, that would retain its hazard approach boundary. It is important to comply with any work practices established by the employer, that might establish that PPE should be utilized to a greater extent than the minimum established by NFPA 70E.
