Hubble Plug Testing.
I have a customer that currently uses a standard probe to test a 220 Hubble (water tight) plug that has been wired in by an electrician at the box/panel. They are testing for common voltage and other "QA" items prior to plugging into their equipment. What are the requirements for PPE for this type of work and would would basic training on the hazards being done by this type of work be enough to call the employees qualified? Also, is there any real risk of arc flash from this type of activity with a closed in plug at this voltage?
Thanks for any input.