Win Engineer wrote:
Yes, but having a plant manager need to sign a permit for this task seems a bit over the top, especially when troubleshooting a VFD at 2 AM. I agree the wording in 70E is gray in places and in my opinion that can lead to broad interpretations of the standard. The problem with leaving it to a qualified person to decide is if something happens....
Part of being qualified is knowing your company's policies/requirements. What restrictions does your Electrical Safe Work Practices program use to determine troubleshooting versus energized work? NFPA70E does not answer this question for you.
I wish companies would put thought into their ESWP and update them regularly, at least every time there is a new edition of 70E.