Shocked through the Props - resolved

quote:
Originally posted by KiDa

quote:
Originally posted by sunshinedaydream

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RiverRat had it correct. Reversed Polarity caused by a non-grounded extension cord plugged in upside down. Not my proudest moment. Marine Electrician went over everything while he was there and solved a couple of small issues I was having with switches on the bridge so not a total loss. Splashed today with confidence. Word to the wise if you have a cord with the ground snapped off, fix it or throw it out!

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Non-grounded I've got. How could you plug an extension cord in upside down? The blades are different widths and have been for decades. Grounded or not, the cord should only be able to go in one way.

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With a big enough hammer anything will fit. :D

I work on satellites and many years ago we had one catch on fire in test because someone "mated" two male connectors. Turns out he needed some pipe wrenches to do it but he got it done.
 
Thanks for coming back and posting the answer. Too often people don't bother to do that, leaving the rest of us hanging.

I hope your electrician told you this, but I'll post it anyway. It's a bad idea to use a two wire ungrounded extension cord outdoors or around moisture or water. You got shocked but it could have been worse.
 
Am I missing something or did sunshine respond while I wuz makin another drink and it wiped out his response? What was the source of the problem?
 
Something still puzzles me. If the neutral was separated from the ground as it's supposed to be, even with the plug reversed how did it feed back into the props??? Seems there might be another problem.
 
agree with Willie - admittedly I'm not an electrician but my understanding is that even if you are pumping voltage into the boats neutral line, it should not leak to your prop shaft. the whole reason boats keep A/C ground and neutral isolated is to prevent making the grounding circuit 'hot' when you hook up with reverse polarity. without a fault on the boat, can anyone explain why a reverse polarity situation would make the boat hot?
 
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