220v to115v Wiring a Vintage Delta Unisaw Motor

Discussion in 'General Electronics Chat' started by Steve Maka, Jan 15, 2015.

  1. Steve Maka

    Thread Starter New Member

    Jan 15, 2015
    3
    1
    Hello Everyone,

    I need help wiring this cabinet saw. It's a 1947 Delta Unisaw. Originally wired with a magnetic starter at 220v. I need to switch the wiring to 115v. The cover indicates this is an easy switch - but I've never done such a thing.

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  2. shortbus

    AAC Fanatic!

    Sep 30, 2009
    4,015
    1,531
    If at all possible leave it wired 220V. You won't be happy with it at 110V.
     
  3. Steve Maka

    Thread Starter New Member

    Jan 15, 2015
    3
    1
    I wish I could - I rent a garage and I'm lucky the guy gives me even a single outlet... Less have a 220 wire installed.. It will never happen...
    I have to hook it up 115 and when I get a shop of my own, I'll switch it back to 220.
     
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  4. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,553
    2,375
    It is all there in the diagram, the contactor coil has to be wired to V W in both voltages, just the jumpers have to be configured for each.
    The motor shows the series or parallel connections for 120/240v.
    The O/L may be too light for 120v though.
    Max.
     
  5. Steve Maka

    Thread Starter New Member

    Jan 15, 2015
    3
    1
    Thanks - I thought it was all there.... But for someone that understands electrical diagrams.. I should have stated that the type of answer I'm looking for is more precise. Example: connect the white wire to the green wire from picture #1, and screw the black wire to the lower right screw from image #2, etc, etc....
    I didn't understand a single word you said...lol
    I'm a carpenter, electrical is not my profession - I just purchased the saw for a great price, but need to switch it to 115.
     
  6. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,553
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    It may be advisable then to try and get some local help, in re the overload, you are going from 5.9amps to 11.8 so you may experience nuisance tripping, if you do I am not sure if the higher rated OL is still available for that contactor, you may have to fit a later type.
    Max.
     
  7. cmartinez

    AAC Fanatic!

    Jan 17, 2007
    3,574
    2,543
    That's a strange-looking diagram in the plaque you got there... it makes it look as if one's supposed to short-circuit the cord's wires in both instances...
     
  8. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,553
    2,375
    I believe it is a simplistic idea of illustrating a D.P. switch, but a little misleading!.
    Max.
     
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