I have read the 70e almost twice now and am having trouble finding any black & white information regarding the required PPE for doing life testing (performing work) in a 3 phase panel between 240VAC & 480VAC in an industrial environment. All the places I used to work required a suit, two pairs of gloves, a helmet, and a face shield. The place I work now says this is only required above 600V like in substations. Can someone shed some knowledge on this subject?!?