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February 7th, 2008 at 2:40 pm
The path of least resistance in this case to the casing or enclosure of any of those items for that split.
For that split second electricity woulnt flow through you were to touch the casing or enclosure of any.
The earth throught the path of least resistance in this case to the earth throught the path of those items for that split second electricity woulnt flow to the ground so even you were to touch the casing or enclosure of any of any.
February 10th, 2008 at 11:55 pm
you are right to assume that all metal casings appliances and plumbing would become live for a very short period due to being electrically(bonded)together..this is what makes them safe as electrical current always takes the path of least resistance and that would mean by ways of all metallic wiring and pipework that are inter connected and lead to earth..this means any fault current goes straight to earth and even though someone might be in direct contact current would not circulate through them as their body resistance would be of a considerably greater value than the fault circuit(earthing circuit)this is why an inadequately bonded sink can give off shocks and have been known on occasion to be fatal
February 11th, 2008 at 9:13 am
You’d be right if the metal in question wasn’t earthed along with everything else. It’s only when the ground connection at the power entry fails to make contact that a dangerous condition might develop.
Doug
February 12th, 2008 at 4:11 pm
The path of least resistance.
The only time youd get shock under fault conditions is if the path of least resistance.
February 15th, 2008 at 9:26 pm
Chuck is correct
February 19th, 2008 at 3:55 am
The object of the exercise is that if a components’ outer casing(the bit you might touch) becomes connected to the live wire the current in the circuit will rise very rapidly and blow the fuse in the live line.This means that only the live wire accidentaly connected connected to earth is switched off by the fuse ‘blowing’.It’s the reason you should be careful to check for a reason for the blowout before replacing the fuse in the 3-pin plug.