DC power versus AC power

Steven M. Bellovin smb at research.att.com
Mon Dec 30 15:46:45 UTC 2002

In message <004f01c2b018$4ac14900$ae876540 at amer.cisco.com>, "Stephen Sprunk" wr
>Thus spake joe mcguckin <joe at via.net>:
>> 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)

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