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Old 03-11-2014, 06:50   #31
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Join Date: Feb 2008
Location: North Charleston, SC
Boat: Camano Troll
Posts: 3,226
Re: Reverse Polarity??

Originally Posted by Fearnow View Post
I found the problem! When the charter company installed the new shore power electric connection, they did not tighten the neutral wire. It finally came loose, causing the RP light to come on. I wish I had checked that first, before tearing everything else apart on the boat.
I would have thought the fact that nothing electrical on the boat worked would have been the thing to troubleshoot, not the fact that the reverse polarity light was on.

I repaired electronic and electrical devices and systems for 30 years or so for a living. I learned early on that the best plan was to think about what might be the problem before tearing things up or replacing parts.

BTW: The reverse polarity light came on because one or more appliances on your boat were "backfeeding" 120 volts to the disconnected neutral buss and that provided a voltage for the reverse polarity light.

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