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On Sun, 14 Nov 2004 16:07:34 -0000, "Graham" put
finger to keyboard and composed: Doesn't a similar situation exist under the hood of your car? Two wires emerge from the alternator, a thick one and a thin one, and both go to the positive pole of the battery. I wonder how many people have stood pondered why that might be? Graham. %Profound_observation% The heavy one supplies current to the battery. The thin one is used by the alternator's built-in regulator to sense battery voltage. This is to compensate for the voltage drop in the current carrying cable. A term often used to describe this technique is "remote sensing". - Franc Zabkar -- Please remove one 's' from my address when replying by email. |
"Leonard Caillouet" wrote in message news:o1old.2980$Dk.2385@lakeread08...
"Rodney Kelp" wrote in message ... The original question was " is it electrically the same" Not is it legally the same. But the real point is that it is not electrically the same in the case of a failure of the neutral line. Leonard No, I don't think they are the same. The green wire grounds the housing of the appliance (for safety), in case there is a short in the circuit. Will the appliance work if you connect the green wire in place of the white wire, no. The green wire is connected to the appliance housing in case of an electrical short. The white wire is the common (ground) return. Do not connect the green wire to the white wire! Listen to the advice already given. These guys know their stuff. |
The main problem in applying Darwin's theory to humans, is that animals
rarely sell their houses. Some barter, or steal them, but they are usually "as-is", and the new owner lives with the consequences as their actions have produced. Our situation relies on laws to protect ourselves from each others' stupidity, and although not a perfect system, still allow for someone to sue you for everything you have if your wiring causes injury, or death to another. Luckily, you have benefitted from the free advice of several learned people here. I hope you have learnt more than just basic power circuit safety... "Rodney Kelp" wrote in message ... If you have a 2 wire house electrical system what's the difference between a 3 wire system and installing a 3wire plug and jumping the ground pin to the white return line. I see no electrical difference between that and running a green wire all the way to the box and connecting it to the same place as the return line ground. If you know what I mean. --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.794 / Virus Database: 538 - Release Date: 11/10/2004 |
Of course the proper, NEC-approved way to convert 2-prong outlets to 3-prong without installing a proper ground is to use GFCI outlets. The NEC also happens to allow the ground and neutral to be tied together in some special circumstances. For example if the circuit only supplies a single appliance like a dryer or stove (some 3-wire corded dryers connect them internally). -Chris |
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