LECTRICBOSS
Member
- Location
- MOORE, OK. USA
I am of the camp of installing 480-120/208v transformers with 3 hots & 1 ground on the primary and using 3 hots and 1 neutral for the secondary both installed in fmc. I ground the case of the xfmr with my grounding conductor and ground my neutral at my first means of disconnect, I.E., main circuit breaker panelboard, to building steel, ground rod, etc. I don't use concentric/eccentric ko's for my conduits but punch the holes so i don't use a bonding bushing on my fmc. Am I doing anything wrong?