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How To Turn Off an Electric Baseboard Heater That Stays On All of the Time, Wiring a Heater with 4 Wires and Wiring a Motion Sensor Light

May 5, 2010

Question Matt Vaudrin asks:
Wondering if somebody can help me out, or point me in the right direction anyway.

I have an electric baseboard heater in my room. Even when the thermostat knob is all the way down (the lowest setting), it will still turn on (it’s never that cold in the room though).

like today, it was almost 80 degrees outside, the knob was all the way down as far as it could go and the heat still came on. The knob won’t turn “off” anymore, so there’s nothing to do except wait for it to go off on it’s own (which is annoying when it’s already warm in the house).

Anybody know if there’s a simple way to disconnect the heater (then I can reconnect when winter comes around again)? Or would I need to call an electrician for that?

The simplest way to turn this off is at the circuit breaker. The heating circuit should be dedicated and the only thing that you should be turning off is other electric baseboard heaters. I also recommend replacing your thermostat. If the heater won’t shut off, then it is probably a bad t-stat. If it is a 240 volts heater, then you are required to install a double pole thermostat.


Pete asks:
I bought 240 v baseboard electric heater the wiring from the main panel come as four wires (red-black-white-bare copper) and the heater only two wires and the ground what should i do to connect it? thank you

Connect the ground wire to the ground screw or ground wire on your heater. Next connect the black to one of the wires on your heater. Now connect the red the the other wire on your heater. Place a wire nut on the white wire and tuck it into the heater’s wiring compartment.


Tom asks:
I have a Euroluce Motion Sensor Light fixture with one sensing unit and two lamp posts. The lamp posts simply have black and white wires coming from it, while the sensor has four: two are simply Blk and Wht labeled “connect to power source”; other two are Red and Blk/White labeled “connect to lamps”. The unit base naturally has a green wire for grounding.

I naturally have attached the grounding wire, and the Blk and Wht wires accordingly to the three wire power source wire. However, I cannot get the two sensor wire configuration (“connect to lamps’) to work. Please explain in color coordinated manner which wire is connected to which for the lamps (i.e., NOT “load” or “neutral” but Red to ____, and Blk/Wht to ____). Thank you!

Be sure to turn off the power first. Connect the ground wires first. Now connect the white wire labeled connect to lamps to the white wires from the lamp posts. Next connect the red and black wire marked connect to lamps to the black wires from the lamp posts. Connect the white wire from the sensor to the white wire in the power source cable. Connect the black wire from the sensor to the black wire in the power source cable. Turn on the power and test.


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