|> I think you need to read up about basic electrical safety. Contact
|> with 12 volts won't kill or even hurt anyone. Not even slightly. The
|> light may draw 7 amps from a 12 volt supply, but a human body won't
|> draw enough current to even be felt. Most automobiles are "metal
|> structures" and nobody has -- ever -- been electrocuted or hurt by the
|> 12 volt supply. Burns and fire risk, now that's another matter. I hope
|> you won't be keeping gasoline in there. A short could generate a fair
|> bit of heat. Adequate fusing of the 12v supply will see to that. Where
|> does the 12 volts come from? A automobile battery?
|> It's not current, but voltage that causes "shocks". To get a shock,
|> the voltage has to be high enough to drive a certain level of current
|> through the body. The threshold of hazardous voltages has been put at
|> 50 volts in some jurisdictions, but even then it would be very unusual
|> to hear of harm from accidental contact. Start worrying around 100
| Sorry I mean "an" automobile battery. I am a bit puzzled. You appear
| to know enough about electricity to be aware of terms like EMI, and
| you have even heard of attaching things to wires to minimize this, --
| but -- you think you can get a shock from 12 volts. This doesn't add
| up. How come?
I have felt the shock from 12 volts AC. I didn't die. But I didn't like
the touch of it, either. That 277 volt shock at another time, though,
was very painful. A couple 120 volts shocks felt in between.
When I was in junior high school, I had a friend who would touch electrical
wires all the time and he said it didn't hurt at all. He'd willingly just
hold wires at 120 volts and it had no effect on him. Then he'd prove they
were live by touching them together with a big arc that tripped the breaker.
When he touched the high voltage anode in an old CRT tube TV set, then he
said those would hurt, but even then he had no qualms about working inside
a running TV (his hobby was collecting old junkers from TV repair shops and
mixing parts to get working TVs out of them). I asked him about color TVs
and he said those did hurt a lot. Either this guy had very high impedance
or very high pain threshhold. Many years later he died by suicide while on
drugs. Sometimes I wonder if ... if he became an electrician ... would he
do his electrical work hot?
| Phil Howard KA9WGN (ka9wgn.ham.org) / Do not send to the address below |
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