North American Network Operators Group
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Re: DC power versus AC power

  • From: Steven M. Bellovin
  • Date: Mon Dec 30 10:49:54 2002 
In message <[email protected]>, "Stephen Sprunk" wr
ites:
>
>Thus spake joe mcguckin <[email protected]>:
>> It only takes 30ma to put your heart into atrial fibrillation. In the
>> usa, gfi's are set to trip at 5ma.
>
>Did you mean 5A, or am I misunderstanding GFIs?
>

No -- 5 ma is correct.  (GFIs measure the difference in current between 
the hot and neutral leads -- if it exceeds 5 ma, it trips.)

		--Steve Bellovin, http://www.research.att.com/~smb (me)
		http://www.wilyhacker.com (2nd edition of "Firewalls" book)