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Old 16-04-2015, 20:08   #1
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Shore power

Hi Everybody !!!, so i got this issue im trying to resolve,i have a 30' Black Watch had it for a while,its been out of water for 3 years due to finacial restraint,but its going in this year !! Yahoo !!!,anyway got this issue, im running 3 batteries,typically in the past would pull into Marina plug in shore power and refridge and batt charger would work,now as im trying to get boat ship shape in my yard figure getting the battery charges going would be good idea,i buy adaptor for shore power cord so i can plug into extension cord,when i do power panel reads "REVERESED POLARITY" and will not allow me to use 125 volt items ie: battery charger ,refridgerator (which is duel power)and a couple lights, any thoughts ??? Thank Peter
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Old 16-04-2015, 20:14   #2
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Re: Shore power

Sounds like the outlet in the marina has the black an white wires hooked up backwards


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Old 16-04-2015, 20:35   #3
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Re: Shore power

Thank you for your response,however ive been to differnt marinas and never a problem,could it be my barn wiring is the problem ?? thanks again,peter
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Old 16-04-2015, 20:36   #4
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Re: Shore power

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Originally Posted by peter8859 View Post
Thank you for your response,however ive been to differnt marinas and never a problem,could it be my barn wiring is the problem ?? thanks again,peter
Could well be. Why not use a polarity tester on your barn?
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Old 16-04-2015, 20:38   #5
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Re: Shore power

as a follow up i have computers and machinery in my barn/office that works just fine ???
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Old 16-04-2015, 20:41   #6
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Re: Shore power

Thank you ,that will be my next step, is that something i can get at HD OR lOWES ??
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Old 16-04-2015, 21:09   #7
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Re: Shore power

Any HD , Lowes, Ace ect should have them.
Here's one advertised for Ace.
GB® Outlet Tester (GRT-3500) - Electrical Testers - Ace Hardware

If your boat was OK at various marinas and is wonky plugged into your barn odds are pretty high the barn wiring is the issue. If it is you should get it corrected as it is a dangerous condition.
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Old 16-04-2015, 21:19   #8
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Re: Shore power

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Originally Posted by peter8859 View Post
Hi Everybody !!!, so i got this issue im trying to resolve,i have a 30' Black Watch had it for a while,its been out of water for 3 years due to finacial restraint,but its going in this year !! Yahoo !!!,anyway got this issue, im running 3 batteries,typically in the past would pull into Marina plug in shore power and refridge and batt charger would work,now as im trying to get boat ship shape in my yard figure getting the battery charges going would be good idea,i buy adaptor for shore power cord so i can plug into extension cord,when i do power panel reads "REVERESED POLARITY" and will not allow me to use 125 volt items ie: battery charger ,refridgerator (which is duel power)and a couple lights, any thoughts ??? Thank Peter
Buy a electrical outlet receptacle tester at the local hardware store
The kind that plugs into the shore outlet and has 3 lights
They identify all sorts of common issues
If all good, check continuity of your shore power cord
And extension cord
If all that checks out it's on your boat
Amazon has them for less than 10.00
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Old 17-04-2015, 06:01   #9
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Re: Shore power

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Thank you for your response,however ive been to differnt marinas and never a problem,could it be my barn wiring is the problem ?? thanks again,peter

That was my point......the particular outlet you've plugged into has the hot and neutral reversed. It doesn't meed to be any other outlet in the barn either, it very well could be only this one.


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Old 17-04-2015, 06:12   #10
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Re: Shore power

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Originally Posted by Sailmonkey View Post
That was my point......the particular outlet you've plugged into has the hot and neutral reversed. It doesn't meed to be any other outlet in the barn either, it very well could be only this one.


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Or the extension cord has the hot and neutral reversed. Not uncommon when it has been made or repaired by a typical DIYer.

Plug it into the outlet if it shows a problem, call an electrician because the wiring may be screwed up somewhere other than just this outlet.

If it tests OK at the outlet but not at the end of the extension cord, the problem is with the extension cord. Fix it or replace it.
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Old 17-04-2015, 23:24   #11
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Re: Shore power

If your barn has wiring issues like reversed polarity your electric items still work, they are just dangerous.

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