SHORT­CUT, NOT CIR­CUIT

Boating - - BOAT DOCTOR - ÑEd Sher­man

Here, you see a ProMariner Gal­vanic iso­la­tor in­stalled in such a way that it is un­able to do its job. Any boat that is plugged into shore power for ex­tended pe­ri­ods of time should have a gal­vanic iso­la­tor in­stalled. But it needs to be wired cor­rectly if it is to func­tion as in­tended. The unit should be in­stalled in se­ries with the green ground­ing wire in the shore-power cir­cuit. That means two studs on the iso­la­tor. One in from the shore and one out of the iso­la­tor to the boat’s air-con­di­tion­ing dis­tri­bu­tion panel. The photo shows that the in­staller put both the “in” and the “out” con­duc­tors on one stud. This ef­fec­tively elim­i­nates the iso­la­tor from the cir­cuit, ren­der­ing it use­less as in­stalled.

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