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I'm not sure what to say to this.
I have been shocked by a LOT Of electric fences.
"Hot" is a term most people use to mean "This has more ________ than something else." This has more juice. This packs more of a punch. This chemical is more likely to burn grass.
I have no idea what I said that might make you believe I think a fence that pushes Alternating Current through a wire actually becomes hot with regard to temperature, but....that's not what I meant.
I'm not inclined to speak in terms that are absolutely literal at all times. Sorry for the confusion.
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It was the below that lead me to think that.
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Had no idea duct tape wouldn't melt/fry).
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Because the fence doesn't actually get hot the tape won't melt or fry, that would require a source of heat.
And small clarification, the fence doesn't have AC current on it. AC fence chargers rectify it to DC and use an inductance coil to amplify the voltage into super short pulses of high voltage DC. But even then, DC is a bit of a misnomer bc it's such a short pulse or burst.
Have you ever seen how a ram pump works to pump water uphill w/o any external energy source except the water flowing down? It's the same principle except with electrons. Electrons flowing on a wire have "inertia" as well but it's called inductance. If you let them flow freely on a long length of wire (often in the form of a coil) then slam the switch shut, the voltage spikes really high.
ETA, I realize this is a little off-topic, just thought it was a good place to throw in the operating principles of a fence charger for anyone that is curious.