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Re: shop compressor


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Posted by ChrisB on January 15, 2008 at 11:40:55 from (71.88.106.1):

In Reply to: shop compressor posted by George G on January 14, 2008 at 21:03:49:


guido said: (quoted from post at 14:30:44 01/15/08) HEY Ray

You said that the compressor on 240v will draw less current? Can you explain.

Guido.


While I am not Ray.....

and in the simplest way to explain.

current = amps

Double the voltage and the current (amps) will be half. Thus if a motor running at 120v and drawing 20 amps is converted to 230v then the amp draw will be 10amps.

Common thinking it is best to run a motor at a highest voltage allowed. Add to this the recent insane prices of copper cable. cheaper too as the cable rating (gauge) is determined by amp draw and not voltage.

Not that running 220v save on your electric bill as some think:

Watts = Voltage x Amps

Which will be the same either way, 120 or 220.


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