Generator not powering cabin equipment.

I agree, call the people who rebuilt it.

Where is the fuse? Fuses are usually for the motor end of the generator not the AC output. I doubt that s your issue.

Small push to reset breakers are usually to protect the DC side of the motor. AC breakers are normally dual pole. It s been year since i ve used a gas gen though... but check around the control box, sometimes they re on the side

The generator was tested prior to delivery. That is why I think it must be a fuse or breaker or something like that. The breaker is a simple red push to reset that seems ok. Does the fuse on the Control box of the generator interrupt the 110 output or just the generators gas engine?

Sorry, I asked the question while you were answering me about the fuse.

All good input and I'll keep looking but so far I have not found any other breaker or switch. This picture was taken prior to the rebuild but the configuration is the same.