Answers To Electrical Questions About GFCI Wiring, Wiring A Thermostat and Converting A Bandsaw Motor To 220 Volts

Elisabeth James asks:
I installed a GFCI, the outlet where the GFCI is installed works, but I Now have an outlet in the room that is dead?

Answer:
Check your wiring for a loose or disconnected wire. When you turned the power back on, did you reset your GFCI? Did the outlet work before you installed your GFCI?

J. W. Roberts asks:
I have recently had some wiring done for electric baseboard heaters. I want to know how to connect up the thermostats. There are three sets of wires coming into the box. One is power, one goes to the heater, and the other goes to the next thermostat.

Answer:
1. Turn off the power to this circuit and verify that it is off at the t-stat before touching any wires.
2. Connect all of the grounds together and leave a tail to connect to the t-stat.
3. Connect the white power wire to the white wire that goes to the other t-stat.
4. Connect the black power wire to the black wire that goes to the other t-stat.
5. Connect the ground tail to the green ground screw or ground wire on the t-stat.
6. Connect one of the load wires on the t-stat to the white wire that goes to the heater.
7. Connect the other load wire on the t-stat to the black wire that goes to the heater.
8. Connect one of the line wires on the t-stat to the white wires that is power and goes to the other t-stat.
9. Connect the other line wire on the t-stat to the black wires that is power and goes to the other t-stat.
10. Install t-stat.
11. Turn on the power and test.

Brendon Drake asks:
My bandsaw is a “general” 2HP 220/110 V. I have changed the motor to 220v. The supplier says no need to replace the cord and/or switch to accommodate the 220v conversion. Is that correct?

Answer:
It depends. Does your cord have a molded plug on the end or is it just wires? If you have a molded plug, then you need to change the cord to one with a 220 volt rated plug. However, the number of wire will remain the same. At 120 volts, your motor needs 1-hot, 1-neutral and 1-ground. At 220 volts, your motor needs 2-hots and 1-ground.

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