21 Feb
2007
21 Feb
'07
7:07 p.m.
From: "Glen Slick" <glen.slick at
gmail.com>
On 2/21/07, Sridhar Ayengar <ploopster at gmail.com> wrote:
HI
I think you are correct. The ones I've opened have a transformer
with counter wound coils for the neutral and the hot. They then
have a sense winding on thatcore. Any differential current trips it.
Dwight
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Chuck Guzis wrote:
If I understand this correctly (and I may not) the GFI detects an
inbalance between the current flows on the hot and neutral conductors,
and does not directly sense a current flow between hot and ground.
http://personal.cha.bellsouth.net/j/o/johngd/files/rv/gfi.pdf And a question for the US experts. On a 120v
circuit, will a $6.00
GFI detect a leak between neutral and ground? Or is the detection
circuitry only on the high side of the line?
I'm pretty sure it's only on the high side. They do make GFCI's that
detect on the neutral side, but if memory serves, they aren't the cheap
ones you find in giant bins in the Home Despot.
Peace... Sridhar