Reply by marcb

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Posted on MORE Power!!! 120 vs 240 volts

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768 posts in 3700 days

#1 posted 05-15-2008 02:55 AM

I’m afraid that I can’t remember the exact calculations to use. However I found this calculator on the internet.

Running 120V over 100 feet of 14AWG at 15Amp gives you a voltage drop of 9.1 Volts, where as running 240 over the same wire gives you a drop of 4.6volts. If you have thin wires or long runs your motor can act a little wonky, so its better to run 240 in those cases.

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