electric current

SAILFISH252

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Winterizing my sailfish 252 rigged with twin 200 yamahas.Getting an electrical current when i went to take off the props and anytime I touched the engine.Also received a shock when removing the drain plug.Wondering if anybody has experienced this before.
 
If the problem occurs with the battery switch in the off position, the most common source of current leakage is a bilge pump float switch or a bilge pump.

Disconnect the positive leads one at a time in order to isolate the problem. They will either run from one of the positive terminals on the battery switch (where the positive battery cables connect) or from the positive terminal of one of the batteries.

Also check the battery cables themselves. If the insulation is damaged, current can leak into a wet bilge.
 
In general, it is unusual to feel stray current with a 12v system. If the boat is out of the water AND absolutely nothing is connected to land power, I can't explain your sensations.
If the boat is in the water but not connected to shore power, the problem most likely is current in the water itself caused by an electrical leak for another vessel, dock wiring, defective lights etc. It could be anything.

If you boat is connected to shore power, disconnect it and see if the stray current remains. If it doesn't, the problem is in your shore power or your boat's wiring itself.
I am also curious where you were standing when you felt the current touching the engine.
 
With a solid connection, you sure can feel 12VDC. First thing would be shore power connection. Next, do you have an inverter? It can be not wired correctly or going bad. Lastly, disconnect 1 battery at a time and see what happens. Are your zincs really used up? Stray currents will eat them up like crazy and when they're gone, the next metal up the list is eaten (usually the tilt motors).