[VAC] Re: an electrical question

[Dr. Gerald N. Johnson, electrical engineer]

I think a wire would fish vertically down to at least floor level, and
could be brought through the wall at floor level into a cabinet and then
go under the floor and fish crosswise under the floor above the belly
skin.

Aluminum oxidizes almost instantly so without a lot of care (covering
the joint in grease before cleaning it) its hard to make reliable
connections. Your life depends on those chance connections. The aluminum
connector grease used these days contains zinc crystals to perforate the
aluminum oxide under connection pressure.

Individual GFCI receptacles can provide a phantom ground. That is being
connected with only two wires and no ground and provide a safely
effective ground. What they do is compare the current in the line and
neutral and if those currents differ by a few milliamps the GFCI turns
off the power. There should be instructions with each such suitable GFCI
for wiring to two wire wiring in old houses.

A limitation is that the GFCI takes a full depth outlet box and those in
my Caravel are shallow. Outlet box extensions do exist, but probably
need a trim ring made of paneling to look acceptable.

Gerald J.



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