Reply by Minorhero

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Posted on 110 vs 220

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373 posts in 3165 days

#1 posted 06-13-2011 10:15 PM

Outside of a physics class there is an amazing amount of superstition when it comes to electrical matters. I think a lot of this is from the fact there are so many folks out there that got their electrical knowledge in an apprentice style system. They do something a certain way because their old boss taught them that way. Their old boss did it that way because he learned to do it that way from his boss and so on.

Folks will swear up and down certain methods or wiring choices are the only way to go while others will swear up and down that they are wrong.

The point is simply this, chances are getting real solid comparison data out of the internet concerning any kind of electrical issue is going to be slim to none.

There is however a very obvious and practical difference between the two. All the 220 wiring configurations for motors I have seen use less amps then their 110 counterparts. What this means is that 110 motors of 2hp tend to use at least a full 20 amps and often times are just over that amount. So unless you have a 20 to 30 amp circuit. you can not run a 2hp motor. 3hp motors will need more power still and since most folks are not running 30 amp outlets they might as well re-wire for 220 volt. This issue becomes even more prevalent when you run out of amps in your box and still need to power your machines.

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