Cruising Sailors Forum Archive

No, two in series should be fine.

The GFCI looks at its own load, and if they're different by more than 5ma (for the household units) they trip. My GFCI tester (home built) draws 8 ma from the hot lead to ground. Putting two in series shouldn't be a problem, unless one of them is faulty. And these things do get squirrley - particularly the household GFCI breakers that go into the panel. These things are $40 a shot, and go bad pretty frequently.

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