AC works on generator, not on shore power. NOT a searay

I thought I would pick the brains of the expertise on this board.
My slip neighbor has a 2004 Chris Craft 33 with a westerbeke generator. The AC stopped working on shore power but works with generator. Just came out of nowhere. He has two 30 amp cords one dedicated to power, other to AC. Switched outlets,switched cords, switched breakers (two breakers for we believe shore power and ac)...no changes. No matter what...same result. Could there be a bad transfer switch somewhere? Any other ideas? Power panel appears to show no Air conditioner shore power. Manuals are lacking.

It would seem that the AC shore power connector on the boat has a problem.

If you have swapped the shore lines at the boat or the pedestal and the rest of the panel lights up regardless of which shore line is plugged in....then the boat receptacle would be the first place I would look.

If the receptacle is not close to the electrical panel, there might be a hidden breaker near the receptacle if it is located more than 10 feet from the electrical panel.

That's possible. No other breaker though, at least that we can find. Connection is very clean. Ever see the power connector just fail?

On my Crusiers with 2 30A into the boat there is a 30a breaker/reset, one for each leg, four total, in the locker where the cords connect to the boat. If one trips the panel still lights up but will not power AC. The reverse polarity warning lights up.

If this is switched to generator it would run as the breakers described above are shore power only.

You have an issue either at the pedestal, the cords, wiring from the shore power connections to the panel.

MM

MonacoMike said:

On my Crusiers with 2 30A into the boat there is a 30a breaker/reset, one for each leg, four total, in the locker where the cords connect to the boat. If one trips the panel still lights up but will not power AC. The reverse polarity warning lights up.

If this is switched to generator it would run as the breakers described above are shore power only.

You have an issue either at the pedestal, the cords, wiring from the shore power connections to the panel.

MM

Click to expand...

Guys...after hours found a switch under the sweet that had been switched off. Problem solved. Feel stupid but it's fixed!