I need to rewire an electric motor (for an air compressor) from 220v to 110v, but have lost the instruction sheet for the motor. Can anyone point me to some directions?
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email the mfg. give them the model ## & serial #, they should be able to give u a wiring diagram.
Every mfg. has a dif. diagram.
Have you opened the cover on the junction box. A lot of times there is a schematic under the cover.
Yeah, but no such luck. Looks like I'm going to have to contact the manufacturer.
thanks
Check online.
Lot of companies now have that kind of info online.
If it's currently wired for 240v, and it is a standard setup with 4 wires (2 coils) to play with, then you can probably figure it out. The two coils would be currently wired in series, and you need to wire them in parallel.
Two wires will be hooked up to the incoming power -- leave those connected as they are.
Two more wires will be connected to each other. They need to be disconnected from each other and connected to the incoming power. The trick is figuring out which connects to which side of the power line, but actually, if you connect them wrong, nothing will happen -- the motor will simply be dead.
However, a better approach is to use a ohmmeter or circuit tester light. Disconnect the two wires connected together, then use the tester to determine which pairs of wires comprise a "coil" -- are connected together inside the motor. You want the two coils to be connected in "parallel" across the power line. The only real trick is that you want them oriented in the proper direction relative to each other, but you can't mess that up if you never disconnect the wires that were originally connected to the power line connections.