SAE forum vs Metric forum

[RainbowrvGreg]

The issue was the transfer switch box. my common wire has a burn or discolored insulation where it connects to the 'out to load side'. seemed tight and clean. I was considering getting rid of the first transfer box (right side) and wanted to understand the purpose of that first transfer box. That box has a 40 amp breaker which I now understand is for use when you are on 30 amp service via the 30amp option.