[R-390] isolation transformer

Roy Morgan k1lky at earthlink.net
Fri Feb 25 02:00:54 EST 2011


On Feb 24, 2011, at 12:04 PM, Tisha Hayes wrote:

> ... use a GFCI to test for ground leakage ... you could
> always make that temporary connection to the GFCI ground through  
> something
> like a 10 Kohm resistor.

I'm pretty sure that Tisha's suggestion is based on the fact that  
(most/all) GFCI detectors in the US are set to trip at about 5 ma ac  
of leakage - that is UNbalance in the line and neutral wires.  So, a  
100K resistor might now work.

Roy

Roy Morgan
k1lky at earthlink.net
K1LKY Since 1958 - Keep 'em Glowing!





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