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RedsfanUk

Just had survey on potential boat.

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13 minutes ago, robtheplod said:

May I ask how you measured this?  thanks!

Steel rod stuck in river water, one probe on that, one probe on hull of barge.
I was in plastic canoe floating on the river, holding the rod. 

Also tested against metal pontoon, boomed off bank with steel poles. Similar difference between bank and barge. 

Shoreline earth point would have been about 100m away.

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interesting, so one end of meter in the water and the other on the hull of boat and should see no DC. Is this volts or current flow?

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Volts. 

 

Meter just in water didn't pick up much. I suspect because of area of probe/low conductivity of water. 

The current flow only needs to be in milliAmps to do major damage (and be a danger to swimmers).

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