james Graham
Member
- Location
- High Point NC
Recently our company installed a 480va 3- phase primary, to 208/120 volt secondary, dry type transformer.Backfeeding it with 208va and connected a conductor to the xo routed in metal race way terminated on neutral bar.This neutral had no load (not that we would have had 277va)But it was installed by habit.the neutral and ground became so hot that they burnt.Can this be explained? This incident has made us leery of bonding the xo to ground when a neutral load does not or will not exist. Should or does the NEC have anything covering this issue?