Need help wiring a switch to this 56c Single phase motor

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David6789

Joined
Feb 14, 2019
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Hope the below pics come through.

Ok bought a single phase motor I am trying to wire for 115v and adding a switch.

The motor has 6 wires. I followed the diagram and twisted the two sets of 3 together. Added the wire for the switch and one for the plug. Switch wire and plug wires grounds are attached to the ground screw on the motor. But I am scared if I don’t do this right I will burn up the motor. Can someone help me figure this out please?














 
on the wire coming in from the outlet (the white 3 conductor cable) the black wire is the one you need the switch on. make and break that wire with the switch and mount the switch.
 
ok so:

The white 3 conductor cable: Copper (Ground) goes to screw inside motor box, Black goes to Line 1 (Wires 1, 3, and 8) and white goes to Line 2 (Wires 2,4,6) ?

Then other end of white cable goes to switch, Copper to ground screw, black to top, white to bottom?

Then Black cable goes to switch: Green to ground, Black to top, White to bottom as well?
 
I'll give this a shot.
If you can, on the romex, the white should go from your source, panel or outlet, straight to the three wires twisted together, 2, 4, 6. Your black on the romex will go from your source, to the top of your switch, then from the bottom of your switch, you go to the other set of three wires, 1, 3, 8.
What you're looking for is power to flow from the source, through your switch, through the motor, then return uninterrupted back to the source. I hope that makes sense.
 
kn4wd said:
on the wire coming in from the outlet (the white 3 conductor cable) the black wire is the one you need the switch on. make and break that wire with the switch and mount the switch.
Click to expand...
Safer practice is use a two pole switch for switching both current carrying conductors. You will find majority of powertools and other plugged equipment following this scheme.
During my working electrician days, I would find about 8% receptacles wired backwards.
 
Lieblad said:
Safer practice is use a two pole switch for switching both current carrying conductors. You will find majority of powertools and other plugged equipment following this scheme.
During my working electrician days, I would find about 8% receptacles wired backwards.
Click to expand...
You normally switch the neutral?
 
Lieblad said:
Safer practice is use a two pole switch for switching both current carrying conductors. You will find majority of powertools and other plugged equipment following this scheme.
During my working electrician days, I would find about 8% receptacles wired backwards.
Click to expand...

This ^^^^^^^^^
Break the load and the return
And spend a few dollars more for a 20 amp switch
 
Agreed, a simple light switch isn't the best method for a motor. Use a double pole single throw switch.
 
I recently bought this same motor for my new 2x72 setup. I was told on reddit that I needed a thermal overload protector and I was wondering if that is necessary or if I can just wire it to an on off switch
 
You can get by fine without overload.
Overload is needed on motors what are remote, unattended or otherwise not directly observed.
Since that motor is right in front of you and you know hard you are lugging it down or otherwise. You right there to observe if something gone wrong, you can switch it off.

Just be sure you use a double pole on/off switch as mentioned prior...
RobMurph said:
I recently bought this same motor for my new 2x72 setup. I was told on reddit that I needed a thermal overload protector and I was wondering if that is necessary or if I can just wire it to an on off switch
Click to expand...
 
You can get appropriately rated DPDT switches at your local home store, and NEMA 4 switch boxes to mount it in.
 
He would only need a DPDT switch if he is wiring for forward/reverse. Most belt grinders only need to go one direction, so a DPST is all you need (On/Off). On a disc grinder, F/R is nice to have.
 
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