One thing does bother me about all this capacitive coupling. Wouldn't BOTH current carrying conductors couple to ground a similar amount and if so the net current differential across the CT in the GFCI would be close to zero? In fact the current in the ground wire would null too.
I just can't imagine this is a real world problem when I see those T poles with 2 or 3 cube taps in them and hundreds of feet of extension cord plugged in. Certainly they trip now and then but I think that is more a function of the lousy cords and defective tools.
True Greg,, but what it can compound it some of the tools used the electronic device to regualation the speed of the tool sometime it can read very funny current wave fourm some case it can cause the GFCI to trip much more eaiser when the sine wave is gone like chopped sqaure wave or moddifed sine wave it can cause the GFCI's CT to be reading at wrong time can cause to trip
so that one thought it can happend
Merci , Marc
