How lucky can I be? The new switch came in on friday from Fed Ex. This morning I went over the schematics of the switch and took a pile of photos. Pretty hot here in Ga and I hooked a fan up to move some air as I worked. 2 minutes previously there was power and then none. Hmmm? Tracked back to the 30 amp receptacle I just rebuilt, knew it was good. Went further up the line and flipped a 30 amp breaker. It felt loose. My son took a look and said the same thing. 'bad breaker'. We replaced the breaker and had power. Plugged in the MH and 30 seconds later the transfer switch clicked over and was ready to go to work.
All the worry and a new transfer switch I didn't need. BUT, I didn't have to go to the trouble of taking all the wires and box out and then putting the new switch in. Turns out a 7 dollar breaker was the problem all along. That yellow on my face is egg, that smile on my face is satisfaction of not having to take out and replace all that equipment.