In article , Paul Burridge
writes:

On 09 Aug 2003 19:46:02 GMT, (Avery Fineman)
wrote:

If the source has over 30 Volts and can supply over 30 milliamperes
through the cardiac region, you will go into cardiac fibrilation.

Sorry, Len, but I can't see it. I routinely check for HV on the anodes
of certain smallish valves with bare fingers and can't even begin to
feel anything under about 80 volts (at very much more current
capability than 30mA) at the low end. However, I read somewhere that
some guy died from just a 12V 'shock' - must have been a world
record.. :-(

I'm not concerned with what YOU do personally, nor will I set any
"standards" for all humans based on what one human can or can't
do or feel.

I got the "30-30" phrase while working at Birtcher Instruments, a
semiconductor test instrument maker and a division of Birtcher
Medical that made several different medical electronic instruments
(EKG, RF knife/cautery, defibrilators,etc.). Someone at Birtcher
Medical told me about it. I was Chief Engineer at Birtcher Instruments
in Monterey Park, California, a suburb of Los Angeles (not the upstate
Monterey, CA, where some FedEx deliveries went, hi). I don't think
that my employer at the time would give me false information.

The City of Los Angeles building and safety codes don't require
inspection of 24 VAC wiring in residences and that sort of wiring is
common here for furnace and HVAC controls, doorbells, etc. That
AC voltage is never considered "high voltage." That is probably true
of the USA National Electrical Code although I haven't read one
recently (I've only read the coding in the Numeric Electromagnetic
Code recently, quite different from the other "NEC").

I really don't know the medical-biological low threashold for direct
cardiac stimulation through an opening in the chest cavity. I don't
care to know. I care to know NOT to futz around with my or anyone
else's body with anything above the "30-30" limits.

If YOU want to experiment with your own body, feel free. Then you
transport yourself to that other "reality." When you get there, ask
someone there to shock themselves into this reality and tell us all what
it is like "over there." I live in THIS reality where survival depends on
not treating electricity cavalierly like it was words in a newsgroup.

Happy zapping.

Len Anderson
retired (from regular hours) electronic engineer person