AC power tripping

Oct 29, 2013
38
Hunter 31 Lake Diefenbaker
I just purchased a B-373. I have been staying on it for the last couple of weeks.

Something I have noticed is occasionally the AC power just shuts off.

It doesn’t trip the breaker on the AC panel. So I usually switch off the breaker and wait a while and it starts working again.

I don’t know what causes this. Sometimes there is very little in the way of devices being plugged in or power being consumed over the very standard stuff like battery charger, and a few other odds and ends.

The boat has a smart plug, but that seems to also still be powered as indicated by the light on the power cord itself even when the boat loses AC power.

I am not sure if there are other breakers or something else I should be looking at to find out where this seems to be getting ‘tripped’ up.

Thanks!
 
Jan 11, 2014
13,122
Sabre 362 113 Fair Haven, NY
Sounds like a loose connection. Check all the connections between the Smart Plug inlet and the breaker. Make sure they are well connected and corrosion free.

The other possibility is the Smart Plug, I believe it has a thermal breaker in it. If the boat side plug gets too hot it will trip and shut off power. This can happen because the load is too high and or it is baking in the sun with a moderate load.

Finally, breakers do wear out, especially ones also used as a switch. It may be the breaker is just worn and will trip easily and randomly.