It took our electrician almost 3 hours to do the whole dock slowly checking the ladders and other points. It is an aluminum framed dock with aluminum safety ladders. This sensor reacts to millivolts. when he got a hit he would then turn off the adjacent boats in order then the power to the whole quadrant to isolate the problem. The two older boats found with hot wiring have been turned off and their owners informed that they need to repair faults prior to a reconnect with our electrician present to retest.
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