Replies

1. 
   davidbrum | Apr 20, 2008 05:45pm | #1

   The info should be either on the motor's info plate or inside the motor's wiring cover.

2. 
   flairwoodworks | Apr 21, 2008 06:26am | #2

   You'll probably need the correct plug (220V and 15A or 20A), a screwdriver, a wire stripper and a pair of needle-nose pliers.  There should be a wiring diagram on the underside of the cover.  Use the pliers to move a couple wires around and install the new plug.

   Chris @ www.flairwoodwork.spaces.live.com

    - Success is not the key to happines.  Happiness is the key to success.  If you love what you are doing, you will be successful. - Albert Schweitzer

1. 
   JohnWW | Apr 22, 2008 06:17pm | #6

   Why do you think you need a switch? If the tool has a a 120/240 motor, that came with the machine, then the original switch should serve for either voltage.If you want to check, open the the switch box and look at the wiring. If both leads coming in from the power cord, they are typically white and black, are attached to the switch terminals then both leads are switched and the switch is suitable for 240 service. If only one of the leads, the black one probably, goes to the switch then you will have to replace it. There will be a third wire coming in, it is the ground and it typically has a green cover, it may be attached to the switch but it has nothing to do with the conversion.John White

1. 
   TWG | Apr 23, 2008 05:31am | #15

   Delta claims I need the new switch so I presume the current one is single pole. I will be back home tomorrow so I will check before I order it. There are two switches listed on the parts list.http://www.dewaltservicenet.com/Products/ProductDetails.aspx?pid=43624&tid=10630Thanks for all the info.

3. 
   TWG | Apr 22, 2008 11:36am | #3

   Thanks for the advice.  The diagram was on the backside of the switch cover plate as suggested.

   It looks like I will also need a $45+ switch if I want to stay with Delta parts.  I'm going to buy the new plug elsewhere.

    

1. 
   HowardAcheson | Apr 22, 2008 05:52pm | #4

   >>> It looks like I will also need a $45+ switch if I want to stay with Delta parts. What makes you think so? The existing switch should be correct for either voltage. The only thing you need is a new plug that mates with your 240 volt wall outlet.Howie.........

1. 
   saschafer | Apr 22, 2008 05:59pm | #5

   Possibly not. A 240V switch is always double-pole; a 120V switch can be single-pole.

   -Steve

    

1. 
   HowardAcheson | Apr 22, 2008 11:33pm | #7

   I could be wrong, but I have never seen a single pole switch on a tool that had a dual voltage motor. Too much liability if someone wasn't aware and didn't change the switch. I'll bet the martini I just mixed that Delta would never put a single pole switch on a dual voltage motor machine.Howie.........

1. 
   saschafer | Apr 22, 2008 11:40pm | #8

   I think you're probably right, but I certainly wouldn't want to risk an alcoholic beverage on it....

   -Steve

    

2. 
   flairwoodworks | Apr 23, 2008 04:31am | #10

   Steve,

   What would happen if the saw required a two-pole switch when wired to 220V but only had a single-pole?  Would it be a safety hazard or would it simply not work?Chris @ http://www.flairwoodwork.spaces.live.com

    - Success is not the key to happines.  Happiness is the key to success.  If you love what you are doing, you will be successful. - Albert Schweitzer

1. 
   saschafer | Apr 23, 2008 04:35am | #11

   It would be a safety hazard, because the motor windings would be connected to a live circuit even if the switch were turned off.

   With a 120V motor, one wire is live and the other one is neutral (at ground potential). A single-pole switch breaks the circuit of the live wire, but leaves the neutral connected, and since it's at ground potential, you can touch it without being shocked.

   With a 240V motor, both wires are live.

   -Steve

    

2. 
   flairwoodworks | Apr 23, 2008 04:39am | #12

   Steve,

   So are you saying that with the switch turned off, the saw could start, or I could get shocked?  Do know off hand whether or not my Delta contractor saw needs a two-pole switch or where I can find out?  I don't have the manual and Delta has stopped making the model, I believe.Chris @ http://www.flairwoodwork.spaces.live.com

    - Success is not the key to happines.  Happiness is the key to success.  If you love what you are doing, you will be successful. - Albert Schweitzer

3. 
   saschafer | Apr 23, 2008 04:54am | #13

   The motor wouldn't run, but all of the wiring would be live, so if you were to fiddle around inside the motor, you could be shocked.

   Are you running your saw at 240V? If so, you need a double-pole switch. If not, you don't.* If you look at the back of the switch, a single-pole switch will have two wires attached to it, while a double-pole switch will have four wires.

   -Steve

   *Not that your contractor saw would have one, but three-phase motors require a triple-pole switch.

    

4. 
   flairwoodworks | Apr 23, 2008 05:02am | #14

   Steve,

   I recently rewired my saw to 220V.  All I did was change the plug and move a couple wire connections around under the motor plate.  It runs fine now.  The switch on the saw has two heavy wires running to/from it, so by your definition is a single pole switch.  Unless each shealthed wire contains two (or more) individual wires.  The shealthed wire looks to be atleast 14ga if not 12ga.Chris @ http://www.flairwoodwork.spaces.live.com

    - Success is not the key to happines.  Happiness is the key to success.  If you love what you are doing, you will be successful. - Albert Schweitzer

4. 
   ginkobiloba | Apr 23, 2008 02:17am | #9

   Hi
   I converted mine and did order the switch from delta. I could not find anything else in my town. The diagram was a bit confusing but I followed it and everything seems to work fine. If you need it, I could probably snap a photo of the wiring.