Quick question. If home appliance are 120 volts and can cause tetany how do people let go when they touch something and are burned. Thanks
They pull their body away. It's local tetany, not total body tetanyQuick question. If home appliance are 120 volts and can cause tetany how do people let go when they touch something and are burned. Thanks
V=IRSo why do we worry about high voltage versus low voltage shocks. Does the high voltage have more potential to deliver higher current? Thanks
Depends on the currents running, and whether you're under going a myclonic jerk, or some other strong spasm. Chances it could hold you, or cause enough impulse to vector you elsewhere.
I do know a guy who had to literally beat a coworker with a 2x4 to get him off a live line when someone screwed up and flipped the wrong switch
Wow. Did he live?
Due to the shock or the beating with a 2x4?unfortunately, no
Due to the shock or the beating with a 2x4?
Too soon?
Due to the shock or the beating with a 2x4?
Too soon?
Yeah...definitely too much.I literally typed that out then deleted it.
I have no doubt.I didn't know the gentleman and it wasn't on my site, so it's somewhat removed from me personally. But from the description I got they almost certainly would have broke something...it was pretty traumatic for the guy telling the story.
V=IR
And "we" don't care about the voltage, it's still the current. 440 lines have more current. Lightning has millions of volts, but isn't always fatal.
I never did fully understand that part. V=IR, and when you touch a "wire" the two variables are the V in the wire and the R of your body that is going to determine the current that flows through your body. So technically, the current in the wire you're touching isn't even part of the equation that determines how much current is going to be flowing through your body given your body's resistance and the voltage drop between the wire and your body.
Or even put it even differently: you have a conductor (the wire) that has a certain fixed resistance R. The only independent variable is the voltage. Since copper is basically the only commonly used conductor for electricity distribution, R is always (more or less) constant no matter which power line you touch cause they're all copper. If you're always using the same R the only way to get low current is to use low voltage, and the only way to get high current is to use high voltage. So in that sense, "high voltage" wire in real life should be synonymous with high current wire. But it's not, and that confuses the hell out of me.