Somewhat OT Knob & Tube wiring (was Re: Power and the RA82)
pkoning at equallogic.com
Tue Jul 12 14:05:22 CDT 2005
>>>>> "curt" == curt <@ Atari Museum" <curt at atarimuseum.com>> writes:
curt> AC "zaps" for a 10th of second at 110v isn't too bad when
curt> crawling around running wires, it smarts and leave a nasty
curt> tingling feeling in your teeth, makes you super wary the rest
curt> of the day.
curt> What is the most painful is hooking up a telco line (I used to
curt> work for an alarm company many many moons ago) and it just
curt> never failed that when you were wiring up the RJ31X fail-over
curt> box to the alarm system, somebody would call into the line and
curt> man does DC hurt and burn ...
Ring isn't DC. The steady state voltage on a phoneline is -48V DC
(give or take quite a lot; I think the spec says the max is -60).
Ring voltage is 10 Hz AC, around 100 volts.
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