115 Volt AC Circuit Not Working

Skip ThunderBolt

New Member
Nov 16, 2022
18
Louisville KY
Boat Info
390 Sea Ray
Engines
2 454 Mercruiser

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do you have a volt meter? check for voltage at the other side of the cord, they do go bad. next is to check at the shore power receptacle on the boat. check if its lose or blackened
 
Sometimes on these older (but goody!) boats it's a bit like you're in some far off, lost land ;)

Did you ever have power?

Does your boat use a master breaker near where the shore power plugs in?

I'm not sure what you mean by "shore power is on", but check the breaker at the shore power pedestal and if good, check for voltage at the boat end of the cable.
 
Yep just have to trace it to find the fault. Good luck.
 
@Skip ThunderBolt I am guessing your boat is late 80's? Is the power still on the side of the boat or was it moved? If it is, there are no breakers between that and the panel. You need to open the panel and measure the voltage coming in to the main breakers on the panel and go from there.

I will ask what is the gold glass fuse you have pictured? That is not original and not by Sea Ray. Are you twin 30's or a single 50?
 
Don’t assume because that crappy needle is not moving you do not have voltage. Check all wires with a quality meter first before bare-handing them. The one on my 2001 sporadically works.
 
@Skip ThunderBolt I am guessing your boat is late 80's? Is the power still on the side of the boat or was it moved? If it is, there are no breakers between that and the panel. You need to open the panel and measure the voltage coming in to the main breakers on the panel and go from there.

I will ask what is the gold glass fuse you have pictured? That is not original and not by Sea Ray. Are you twin 30's or a single 50?

twin 30 amp coming in. Thanks
 
I doubt that glass fuse has anything to do with it. Looks more like someone added that as part of a stereo system.

What position should that generator transfer switch be in for shore power? Looks like it's in "1+2" mode, which I think feeds both your AC inputs from the generator.
 
Hello All,
The 115 Volt AC circuits are dead. I checked the shore power, and it is on. I also checked the fuse. Does anyone have any additional advice on what might be the cause of the problem?View attachment 137008 View attachment 137008 View attachment 137008
I doubt that glass fuse has anything to do with it. Looks more like someone added that as part of a stereo system.

What position should that generator transfer switch be in for shore power? Looks like it's in "1+2" mode, which I think feeds both your AC inputs from the generator.

1&2 should feed from shore power lines 1 & 2, switch to "Gen" position 2 o'clock, for power from the generator. No?
upload_2022-11-26_12-51-58.jpeg
 
1&2 should feed from shore power lines 1 & 2, switch to "Gen" position 2 o'clock, for power from the generator. No?
Not sure. I'm not sure how those switches are configured, so that's why I threw it out there. Seems like that switch is between the voltmeters and the shore power, so it could be having a problem (bad contacts? loose wire?) or just be in the wrong configuration/position.
 
The rotary switches have multiple configurations. And going from pin to pin isn't going to help out. The only way to t-shoot this is to see that power is coming in to the panel/switch, then trace back from the panel to the switch. There is a good possibility that the switch is burned out internally. Blue Sea Systems makes newer versions of these switches, but I doubt with the same pin out.
 

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