AC Power Issue

[Hooked on Deanna]

So I've been experiencing an issue with the AC shore power. Both sides of shore power show around 118V with no load. The AirC will cause the volts to drop below 100V. I used my neighbors power about two days ago (same power box) and the volts went up past 120V and did not drop under load - until today. I tried a neighbor from a different box and still low volts. Any idea what could be causing this issue? I'm getting the power box checked and I guess I need to get my boat looked at.

 

[divinginn]

Re: AC Power Issue

Undersized wires will cause than under a load.

 

[Hooked on Deanna]

Re: AC Power Issue

Using 50 amp shore power cords.

 

[Hooked on Deanna]

Re: AC Power Issue

Using 50ft / 30 amp shore power cord...During the time of was experiencing low voltage from shore power I fired up the genny and did not have a voltage problem. Does that eliminate a power panel or boat wiring issue?