Here's a little more information to ponder on this very lengthy GFI
thread.
According to a study by Charles F. Dalziel at the University of
California at Berkeley and W.R. Lee at the U. of Manchester:
1 to 6 mA you receive a "tingle." Deaths are "indirect" (i.e. you
might panic and fall off a ladder).
Six milliAmps and above you could be in trouble. The general process
is:
"Let-Go" currents were found to be 16 mA for men, 10.5 mA for women,
even lower for kids (but no real data since zapping kids is not
socially acceptable behavior). Dalziel/Lee indicated 9mA for men, 6mA
for women should be the limit.
Once above the let-go current you are "locked" into the circuit.
Your resistance will begin decreasing.
By 25mA you experience violent muscle contractions.
If you're lucky they'll throw you from the circuit.
Otherwise your resistance will continue to decrease. By 50-200 mA
your heart rhythm is disrupted.
You're very likely to die once you get to this point.
Jon Bertrand
[email protected]
______________________________ Reply Separator _________________________________
Subject: Re: (off topic) GFI history.
Author: [email protected] at Address-InternetPO
List-Post: [email protected]
Date: 9/9/97 9:27 AM
I had read once (long ago) that fribilation would occur starting at 7
or so mA in a statistical significant portion of the populace. To hear
30ma is surprising! I have several GFI outlets in my house and never
had nuisance tripping. Even with highly inductive loads I cannot see
how this will cause an imbalance of current unless there is a fault
path. Nuisance tripping can only occur if you indeed have an alternate
return path, lossy insulators, spark-overs etc.
Just my views!
Hans
______________________________ Reply Separator _________________________________
Subject: Re: (off topic) GFI history.
Author: Non-HP-chris-dupres ([email protected]) at
HP-ColSprings,mimegw5
List-Post: [email protected]
Date: 9/8/97 11:15 PM
