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Max Online: 36273 @ 01/23/13 02:34 PM
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#12413952 - 09/04/17 05:36 PM 12v wiring and water
joho5 Online   content
Extreme Angler

Registered: 07/03/08
Posts: 2938
Loc: Abbott, TX
Ok, This is a dumb question...but why do exposed 12v connections, like say on a boat trailer not short or whatever when they go under the water? Why is it just the bulbs that need to be water tight?

12v current still transmits under water from wire to wire even when in contact with water?


#12414268 - 09/04/17 09:03 PM Re: 12v wiring and water [Re: joho5]
psycho0819 Online   content
Extreme Angler

Registered: 03/27/05
Posts: 1540
Loc: Kaufman
The voltage is low,12v, so it's not as apt to conduct through water as higher voltages will.

Mainly, incandescent bulbs blow because they are hot and hit cold water when backing the trailer in. More of a rapid expansion/contraction of disimilar materials thing than it is an electrical issue. The sockets, being copper or brass, will also corrode/oxidize.
If you're not living on the edge, you're taking up too much space!

#12414728 - 09/05/17 09:32 AM Re: 12v wiring and water [Re: joho5]
Capt Craig Online   content
Extreme Angler

Registered: 08/25/09
Posts: 1510
Loc: Richland-Chambers
Fresh water is a very poor conductor of electricity. Saltwater however is an excellent conductor of electricity.

12 volt is just too weak to cause much of a disturbance. 110 AC however, is strong enough that even in freshwater, it can cause electrocution around docks with faulty wiring.
Capt. Craig Copeland
Licensed by the US Coast Guard

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