i just acquired a house from my in-laws and have what appears to be a really bad wiring issue. I would post an image but I guess I am not allowed.
I have 100 amp service running to the garage from a exterior sub-panel (only has one 100 amp breaker) This is a 3 wire system. Am i correct to assume that the wire with the green insulation would be the ground?
My question is, how could I put a 4 wire panel in the garage? Is it possible? or should I just stay with the 3 wire system?