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Reversed polarity light is lit up

Old 03-17-2020, 08:02 PM
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Default Reversed polarity light is lit up

Hey all, I have my 28 Albin TE on the hard and wanted to charge the batteries up. I hooked up my 110 to 30 amp converter and an extension cord to a 110 outlet at the marina and when I turn my panel on I get the green power light. If I turn on my 110 volt outlets the reverse polarity lights very dimly. If I turn on the water heater it lights brightly. If I turn on the battery charger it lights up as well. It seems to light up brighter for items that are drawing more juice. Everything is working correctly but the reverse polarity light is lit.

This is the first time I hooked it up to 110 Instead if dockside power. I did recently have the shore power connection unhooked because i had the side panel Inserts painted. I went green to green, black to black, and white to white. So where is my issue? Should I try reversing the hot and the neutral or will I fry something?

Thanks
Old 03-17-2020, 08:05 PM
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Verify polarity of the power pedestal with a meter. ( unplug your boat first). If the pedestal is correct, it’s your wiring somewhere. Verify pedestal FIRST!!
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Old 03-17-2020, 08:14 PM
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Originally Posted by Still Stoked View Post
Verify polarity of the power pedestal with a meter. ( unplug your boat first). If the pedestal is correct, it’s your wiring somewhere. Verify pedestal FIRST!!
how do I verify it? It’s coming from a 110 outlet with a gfi , not a pedestal in this application. Thanks
Old 03-17-2020, 08:22 PM
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Whatever the power comes OUT of. Pedestal/ outlet/ cord....The source.

Stick your meter probes in those holes to verify polarity.

Make sense?
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Old 03-17-2020, 08:24 PM
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GFI still provides got, neutral, ground.
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Old 03-18-2020, 04:14 AM
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Use a multimeter set to 120vac to test the outlet. Put one lead in the taller vertical slot on outlet and one in the round opening. Needs to show zero voltage. If you have 120v then outlet is reversed polarity.

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Old 03-18-2020, 04:23 AM
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If you don’t have a multi meter you can buy a little thing that plugs into outlet and will tell you if it’s wired correctly. It only costs a couple of bucks and it’s a good thing to have . I check receptacles whenever I go somewhere new before I plug in.
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Old 03-18-2020, 04:28 AM
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If the cord is too light or too long it can cause the light to come on dim. To test just turn the main breaker on. Then start switching things on to add a load. If it glows brighter as the load goes up I dont think you have a problem at all. Just too much resistance in the cord.
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Old 03-18-2020, 04:40 AM
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That GFCI would not stay "set" if the hot and neutral was reversed. I'm with Backcove, extension cord too small and PLEASE don't turn that water heater on with that extension cord!
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Old 03-18-2020, 04:42 AM
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I think when you plug in with your normal shore power cord the light wont be coming on.
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Old 03-18-2020, 07:08 AM
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Thanks for all the advice folks! Looks like I have a good starting point here
Old 03-18-2020, 07:19 AM
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Heard of the same situation before when using extension cord. See if the ground prong on the extension cord is good.
If you're using a cord with no ground, most likely you have the plug reversed You also can get a weakly illuminating reverse polarity light caused by voltage drop in the neutral conductor.
(can be caused by reversing the hot and neutral wires somewhere in the dock or boat)
When polarity is reversed it means that electric current is coming in the back door (neutral wire) of the circuit instead of the front (hot wire)

Last edited by Thalasso; 03-18-2020 at 07:27 AM.
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