MikeC,
You are correct that current is a killer, but current only exists if there is a voltage present and a load through which the current can flow. More correctly POWER is the killer.
Power is the combination of voltage and current.. Mathmatically: Power= current multiplied by voltage. Given a constant load (in this case MUD's calf) 240 volts would deliver twice the power of a 120 volt circuit.
That 20,000 plus volt pulse to the spark plug is so short that little power is delivered but it could kill under some circumstances.
The wires on those (stick man like) Power Transmission Towers would melt an elephant because they can deliver an enormous amount of power ( enough to power cities) VoltageXCurrent. Unless you are very knowledgeable of electrical safety practices don't mess with the 220 volt service to your Milker, Compressor,A/c, Range, Oven and other equipment that requires high power input. Come to think of it that applies to working on 120 volt services as well.
By the way Ground Fault Isolation (GFI) breakers and outlets will not help you live if you grab a hot wire. You will get the same power delivered whether it is a GFI or regular breaker or outlet. All GFI accomplishes is to tell you if there is a faulty circuit but it only does that only if you exercise the buttons according to instructions.
Don't go throwing that toaster attached to a GFI outlet into the bath tub: the result would be the same as what happened
when you did it when attached to the old standard outlet.
The condition of the calfs heart can tell you if it was killed by electrical shock. Melt tracks ... I'd look for burns on the nose or tongue.
Sorry about the loss MUD.
Jay
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