• expatriado@lemmy.world
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    7 hours ago

    the path of least resistance for the current would be down one connected bolt, then around the top plate, and up the other battery connected bolt, never down the pole, so the ceiling/floor gets heated up, possibly burn

    note: those bolts must be supper long to go from ceiling to floor

    • tyler@programming.dev
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      7 hours ago

      12v is hardly anything. This is not a joke, go put your hands on both terminals of a car battery. You won’t feel a thing.

      • expatriado@lemmy.world
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        6 hours ago

        still can spin a big truck and/or turn on incandescent bulbs with temperatures in the thousands of degrees

        the internal resistance of lead-acid batteries is in the tens of mili-Ω, the circuit of 2 cables, 2 bolts and one plate/top of the pole would be in the low 100s mili-Ω. lets round up to 200mΩ, power = V•I = V^2/R = 12^2/0.2 = 720W, enough to heat up the top assembly of the pole, and smolder some wood

      • stupidcasey@lemmy.world
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        6 hours ago

        That’s true but only because the voltage is low a car battery can pull ~2X the amps in of main it won’t kill you because it can’t connect but if it ever did

    • stupidcasey@lemmy.world
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      6 hours ago

      That’s why you connect it directly to main so it doesn’t require a closed loop to create a chemical reaction,.