Hi Don. I may be getting in over my head here, becasue I have never done (or seen) any PPE calculations.
Is the fault always assumed to be inside the equipment you are working in? I mean, it seems to me that trying to determine the incident energy would always sort of be a crap shoot, since you don't know at what point on the wiring system the fault might occur. For example, if you have a 100' lenght of conductor, the incident energy would be higher if the fault occured closer to the breaker, but lower if it occured 90' away from the breaker. I think this would also play into the clearing time of the fault and therefore the level of PPE. Am I off base here?
