I am adding a dust collector. It draws 9 amps at 220V, 18 amps at 110V. I could use an existing 110V circuit with a 20 amp breaker, but sounds like I could overload this easily if I used another tool on the circuit.
I can run a new circuit from the subpanel without much difficulty. Are there advantages/disadvantages to making this 220V vs 110V?
Thanks for the help.
Paul
Replies
You'll want to run 220. There is a good chance the 20 amp breaker would flip on start up at 110.
Besides, I've found that 220 volt machines see to cause less grief (line voltage sags, lights dimming at start up, etc..) than similarly powered 110 volt ones.
My shop has roughly the same number of 220 volt outlets as 110s for this reason.
You should not be using more that eighty percent of the breaker amperage i.e. eighty percent of twenty amps equals sixteen amps. Since dust collector exceeds that by two amps, it is not recommended on the 110 volt twenty amp circuit. One advantage of the 220 volt circuit is you would have less line voltage loss (however insignificant that might be) - therefore more power and a more efficient running motor. It should have a dedicated circuit.
Edited 1/24/2006 9:18 pm ET by tinkerer2
Edited 1/24/2006 9:20 pm ET by tinkerer2
Is this a 1.5HP collector? I run my Jet canister DC at 110V on a 20-amp circuit (same as with the 1.5HP Jet table saw; both are 18 amps, IIRC) and have no problems whatsoever. I do always make sure it's on a different circuit than the tool I'm using at the time, but it might be on the same circuit as 2 or 3 fluorescent fixtures, and I've had no problems.
That being said, it'd still be better to get it on a separate 220V circuit, and that will happen soon.
forestgirl -- you can take the girl out of the forest, but you can't take the forest out of the girl ;-)
Do unto others as you tell them they should do unto you....
Edited 1/31/2006 11:41 pm by forestgirl
One and a half HP motor drawing 18 amps on a 220 volt circuit. That is very inefficient. Surely you mean it would draw 18 amps if it were on 110 volt. Shouldn't draw more that 9 amps on a 220 volt circuit. What is IIRC? Do unto others before they do it to you!
IIRC = If I Recall CorrectlyMy goal is for my work to outlast me. Expect my joinery to get simpler as time goes by.
Yes, but finish the sentence. What does it mean. Ha Ha. Seriously, I did have a second take to get that one. Thanks, that is another abbreviation I will put to memory.
The 1.5HP motors' plates say 18 amps on 110 (115) V. What did I say up there??? Guess I should go look and edit if need be.
Ahhh, it was implied but not specified. The point is: those motors don't give me any trouble on a 110/20-amp circuit. I don't even notice a significant dimming of lights when I turn either on, unless there happens to be 1000W of halogen lights plugged into the same circuit. Ooops.
forestgirl -- you can take the girl out of the forest, but you can't take the forest out of the girl ;-) Do unto others as you tell them they should do unto you....
Edited 1/31/2006 11:42 pm by forestgirl
Edited 2/1/2006 12:00 am by forestgirl
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