Vintage Singer sewing machine old style AC plugs were not polarized; consequently the hot side of the circuit can run through either side of the machine. The light socket can provide a shock even with the light switch off depending on how the non-polarized AC plug is inserted into the AC receptacle.
New AC plugs are polarized so it provides an opportunity to wire the machine in a safer manner.
I am providing a wiring diagram that depicts a polarized wiring path using a polarized AC plug.
It might be helpful to also note that polarity does not matter with regard to the controller and the motor.
I hope you find it useful.
Michael
I am providing a wiring diagram that depicts a polarized wiring path using a polarized AC plug.
It might be helpful to also note that polarity does not matter with regard to the controller and the motor.
I hope you find it useful.
Michael
Disclaimer:
Don't attempt the techniques explained in this article if you don't have electrical experience or are not certified in electronics. Doing so may result in electrical shock and/or death. If you decide to act on these techniques, you are doing so at your own risk. It is recommended to have your work checked by a licensed electrician or certified electronics expert.
