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Old 21st June 2005, 03:40 PM   #1
rif is offline rif  United States
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Default Power Tools: 220V v 110V

I haven't posted at this forum in awhile, hopefully I can rekindle my interest in the audio diy hobby.

Anyway I'm going to be buying some power equipment (non audio related) -- some of the tools require a 220V hookup (like a dust collection unit). I'm still in the 1 phase market though

Can I use a simple step up x-former between my 110V house connection and these tools? The 220V specs are for 60Hz (not European 220V standards). I believe they use the higher volt b/c of power requirements -- higher voltage lower amps is safer maybe? Hopefully it's not a higher voltage and same amps -- then of course a step up won't work.

Or do I have to have an electrician come and complete a 220V circuit in my shop from the house's circuit breaker unit?

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Old 21st June 2005, 03:47 PM   #2
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Default Re: Power Tools: 220V v 110V

Originally posted by rif
Or do I have to have an electrician come and complete a 220V circuit in my shop from the house's circuit breaker unit?
Get yourself a book on basic home circuit wiring and do it yourself with two 120V breakers. If you don't like working with AC power, then use an electrician.

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Old 21st June 2005, 04:28 PM   #3
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I used to have my Delta table-saw hooked up to 110, but had the electrician rewire the garage for 220 (and rewire the motor). The difference in torque is tremendous -- I think you will be much better going back to the "box" and running a proper 220 Line.
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Old 21st June 2005, 06:30 PM   #4
Schaef is offline Schaef  United States
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I have to agree with Cal, run a 220 line. Do not attempt to do what a step up, something will go wrong. (I'm not even sure it'll work properly) If you're nervous about the voltages at all, have an electrician do it. It's not complicated, but at that level, its much better to be safe than sorry.

Also, as jackinnj said, switching to the higher voltage will allow your tools to run with higher torque and what not. (I don't remember fully why, but its got something to do with the balanced voltage coming in)
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Old 22nd June 2005, 03:48 AM   #5
Enzo is offline Enzo  United States
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Basic American house wiring is 220 anyway. The phase is split, with neutral in the center. SO half the circuits in the house are 120 off one side, and the rest come from the other side. So all youur electrician needs to do is bring both sides out to a 220 outlet for you.

The nice part about 220 is that you are drawing through both sides, if you used a step up, you would be drawing off one side and the transformer would need to draw twice the amps from that side rather than the nornal draw from both.
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Old 22nd June 2005, 04:39 AM   #6
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the nice part about 220 is that you are drawing through both sides
which is a balanced power supply.
I see a problem when the tool does not have a ground connection as a safety. If it has a ground there should be no problem running a tool in balanced 220 mode - provided a properly rated outlet.
Is it according to code????
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