How to Hardwire Electric Baseboard Heaters
- 1). Insert a flathead screwdriver's tip into a knockout hole's slit, on the back of the electric baseboard heater. Turn the knockout and pull it out of the baseboard heater. Insert a strain-relief connector into the hole.
- 2). Put the supply wires, coming from your wall, through the strain-relief connector. Extend the wires approximately 6 inches into the baseboard heater. Tighten the strain-relief connector's screws, with a Phillips screwdriver, to hold the cable in place.
- 3). Push the baseboard heater flat against the wall. Secure it to two wall studs, using the provided wood screws.
- 4). Cut the supply wires' stripped ends off with a wire stripper/cutter. Remove about 1/2 inch of insulation off each wire to expose fresh wire material. Hold the green ground wire coming off the baseboard heater together with the green ground wire entering the heater from the wall. Twist a wire nut over the two wires.
- 5). Remove the wire nut holding the two black baseboard heater wires together. Hold one of the supply wires coming from the wall together with a wire coming from the thermostat (which you purchase separate from the baseboard heater). Twist a wire nut over these two wires. It does not matter if you use the white wire or the black wire since both will be hot wires when this wiring is complete.
- 6). Hold the second thermostat wire together with a wire coming from the baseboard heater. Twist a wire nut over these two wires. Hold the second wire coming from the baseboard heater together with the final loose supply wire coming from the wall and twist a wire nut over them.
- 7). Push the electrical wires and thermostat into the baseboard heater and mount it in place, according to the manufacturer's directions.
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