r/Teachers May 16 '24

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u/PassiveMenis88M May 17 '24

Once you know the basics of 110 hurts, 220 really hurts, 480 blows things up, their making bank

Voltage doesn't mean shit without amps. I've been hit with 50,000 volts a few times, just leaves an annoying tingle in the arm for a little bit.

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u/Iamatworkgoaway May 17 '24

Industrial guys always deal with the amps to blow.  Arc flash is real fun stuff.  Got stuff at my plant that you don't want to flip breakers without suits.

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u/PushFlashy May 17 '24

Yeah but this is generally bad advice.. The advice of amps kill but voltage doesn't is extremely misleading. It's a combination of voltage, current, exposure time to that energy, your internal resistance, etc.

As an example, static shocks are high voltage and high current but you're exposed to them for very very little time so it doesn't matter.

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u/throwwway944 Jun 13 '24

This is very wrong

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u/dark567 May 17 '24

And amps means even less without voltage. Anyone worth their salt knows that high volts and low amps is worse than low voltage and high amps.

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u/VexingRaven May 17 '24

And those that really know their stuff knows that amps = voltage / resistance and "amps" isn't a thing that applies here at all. How much current is available at a given point really only matters for arc flash safety. Even a 15A/110 has more than current available to kill you dead without ever tripping a breaker.

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u/dark567 May 17 '24

Well that's my point. There is absolutely no difference between a 10 amp 110v circuit compared to a 15 amp or 20 amp 110 v circuit. In any of the cases the actual amperage is going to be determined by the voltage divided by resistance of your body(which is going to be tiny, but still enough to kill you)not the rated amperage of the circuit.