Shore Power

Kirk Bair

New Member
May 20, 2022
13
Boat Info
2001 Sea Ray Sundancer 340
Engines
2 7.4 liters
I have a 2001 Sundancer and I lost 120 volt shore power to breakers for receptacles, etc. The wring diagram show an inline fuse on power supply wire before panel termination. I'm looking for the location of that inline fuse indicated in diagram. It has to be blown, everything else that it could be was checked. Thanks for any assistance.
 
Okay, thanks for the information. Do you have any idea where that inline fuse would be though? I'm curious. We did check the shore power hookups in the transom storage box both, lights were illuminated red. That's when we decided, probably incorrectly, that it was the inline fuse we found in the diagram in the manual. We searched everywhere and couldn't locate it.

We assumed everything was okay there due to the red lights being on.... I'm currently not at the boat.
 
check the GFCI if it's tripped it kills the 120 volt outlets
 
Okay, thanks for the information. Do you have any idea where that inline fuse would be though? I'm curious. We did check the shore power hookups in the transom storage box both, lights were illuminated red. That's when we decided, probably incorrectly, that it was the inline fuse we found in the diagram in the manual. We searched everywhere and couldn't locate it.

We assumed everything was okay there due to the red lights being on.... I'm currently not at the boat.

There is a breaker for each shorepower inlet right beside/beneath the plugs. Lights will be red so you have power to the plug, but if one or both breakers are tripped, the power is not getting past the inlet. Never, ever seen nor heard of an inline fuse on an AC line.

Bennett
 
@Kirk Bair
Let’s back up a bit

Is ALL power out ?
Or just some items?
 
Microwave, Outlets, refrigerator/Ice maker, water heater and ac converter.

These stop working after I used a portable air conditioner from Lowe's which was plugged in to one of the outlets. My plan was to use this when I'm staying on the boat on weekends until I get the boat air conditioning system repaired.
 

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I thought this was the issue after exhausting all others. This appears to be an inline fuse which we could not locate on yesterday.
 

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Not fuses
Those are the power and reverse polarity lamp

House hold appliances often, although they should not, have the ground and neutral connected in the appliance
I assume three prong cord, unplug it.

Then look for a GFI breaker
Or a GFI outlet that needs reset

it doesn’t have to be the outlet you were plugged into. GFI outlets can protect many downstream from them

check in galley, head often there
 
Ps
A large enough ground fault may even have tripped every GFCI outlet onboard
You may need to reset them all.
 
There's only one GFCI in the boat I personally checked that and also according to the manual. It's right below the main breaker box in the galley. The issue has to be the breaker which I was not aware of, in the transom storage box where shore power plugs in. I will be back at the boat tomorrow to check on that.
 
Your power light is on and the voltmeter in the panel is showing voltage
So not likely the main breakers

My 300 has two GFCI
The one in the head is mounted overhead I have to practically stand on my head to see it.

I can’t imagine a 340 has only one.
Take a good look at all recepticals
 
I looked at all of the receptacles, including the one in the head. The manual also states that, and I double checked that, the only GFCI receptacle is below the main breaker box in the galley. If there is no inline fuse the issue has the main breaker switch in the transom storage box. I did not realize there was a breaker in there.
 
Your power light is on and the voltmeter in the panel is showing voltage
So not likely the main breakers

My 300 has two GFCI
The one in the head is mounted overhead I have to practically stand on my head to see it.

I can’t imagine a 340 has only one.
Take a good look at all recepticals

Agree that it is not the breakers in the transom box now. You are showing the green lights and voltage on the AC Meter. You are getting power to the MDP….

Bennett
 
If the issue is not in the transom storage, I'm at a loss. I'll be at the boat tomorrow.
 
Ok let us know

If nothing definitive is found you are going to have to make a choice.

Further diagnosis at that point is going to require using a multimeter inside the main panel with power on.

If you are not absolutely comfortable and confident doing so you should reach out to a marine electrician.

These are potentially lethal voltages.
 
Ok thanks! I have an electrician. We checked the main box and the box in the engine compartment, all good except the 220 volt shore power to breakers for receptacles, microwave, ac converter etc. We thought there was a an inline fuse blown. Hopefully it's the breaker in transom box.
 
Microwave, Outlets, refrigerator/Ice maker, water heater and ac converter.

These stop working after I used a portable air conditioner from Lowe's which was plugged in to one of the outlets. My plan was to use this when I'm staying on the boat on weekends until I get the boat air conditioning system repaired.
From the picture of your distribution panel you posted I only see the Outlets and AC Converter breakers "On" and you report neither has power. I would expect a tripped GFCI would not affect the AC Converter. As others have noted you do have power to both (Red and Blue side) the 120 VAC meters and the Green indicators for both seem to be lit, so you have 120VAC in your panel.

Given the above, I suspect an issue inside your electrical panel between where the "Blue" main breaker and the "main" side of the five breakers for "Microwave, Outlets, refrigerator/Ice maker, water heater, and AC Converter." Loose wire, bad crimp, ... . Glad you have a marine electrician to look at it.
 
@Kirk Bair Remember the old adage; "If it can't be fixed with a hammer its an electrical problem." Anyways, what you need to do is get a voltmeter that can handle the 110 volts AC. You then need to trace the electrical system to find where the break in it is. If the power lights or volt meter are on when you turn on the main breaker well you know its got power to at least the main breaker. If all the secondary breakers have no power after the main one well the defect is between those two. If only one or two of the secondary breakers has no power odds are that individual breaker has failed. Since you are saying its the GFCI outlets that lack power you must realize that if one has tripped then they all have tripped on that circuit usually. If one has become defective it could be affecting them all. On my 270 there are three GFCI outlets, one in the galley, one in the head, and the last one in the aft compartment right below where my shore power plug goes in. Also the 110 system goes through the power inverter on my boat. When my old inverter failed I lost all 110 to the boat too until I replaced it. You can also bypass the inverter by splicing the 110 wires correctly too just in case that is too expensive a device for you to replace right away. If you aren't adept with electricity though I'd strongly encourage you to just let the electrician you hired figure it out for your own safety.
 
Found the issue! Just getting here today.
 

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