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Wiring a Motion Sensor Light, Installing an Electric Baseboard Heater in a Closet and Grounding Your Electric Dryer

February 14, 2009

Question mark James Vida asks:
I’ve got 3 wires coming from a light sensor (red, black & white) and 2 wires + ground that come from my light. I know that I connect white-to-white and black-to-black, gnd-to-gnd; where does the red wire connect?

You should have 1 more cable with 3 wires in it which come from the switch or power source. The first thing that you need to do is determine which wire is the line and which is the load from your light sensor. After that ensure that the power is off and check it at the light with a voltage meter before beginning work.

Now connect all of the ground wires together, place a wire nut on them and tuck them into the box. Next connect all of the neutral wires together, place a wire nut on them and tuck them into the box. Now connect the black wire coming from the light to the load side of the light sensor. Next connect the black wire coming from the light switch or power source to the line side of the light sensor. Finally, install the light, turn on the power and test.


Joseph Casha asks:
I want to add a 3ft hydronic electric heater to an existing 2ft heater and use the same thermostat. The 2ft heater is in the bathroom and the additional heater with be located in a closet which is directly opposite the bathroom is there a specific wiring configuration I need to use. If so,can you give me a heads up on the correct wiring? Both heaters are 240volts.

I do not recommend this. The National Electrical Code® (NEC®) does not specifically restrict fixed electric space heaters from being installed in a closet, but NEC® section 424.13 states “Fixed electric space-heating equipment shall be installed to provide the required spacing between the equipment and adjacent combustible material, unless it is listed to be installed in direct contact with combustible material.”

It is also not recommended to control an electric baseboard heater from a thermostat in another room. The thermostat in the other room will not accurately detect the temperature in the opposite room with your new heater.


Taunya asks:
I’ve just changed the cord to my dryer but the green ground bolt is at quite a distance from the black, white and red hookups and the green cord won’t reach that far. I’ve grounded it to another screw and the frame of the dryer but I’m not certain that’s good enough?


In theory, this will work. However, I recommend connecting the ground wire to the green ground screw provide by the manufacturer. To lengthen the wire, simply strip a little more off of the outer sheath of the cable and push the cable further into the dryer’s wiring compartment.

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4 Responses to “Wiring a Motion Sensor Light, Installing an Electric Baseboard Heater in a Closet and Grounding Your Electric Dryer”

  1. Tom on June 25th, 2009 8:07 am

    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!

  2. Kyle Fraser on June 5th, 2010 10:57 pm

    I installed a motion sensor to my front door, but realized it is on the same cicruit as two lights I have on the front of my garage….so to have the motion light active/ready, I have to have the switch on, which leaves the other two lights always on. The only options I can think of is to either install motion sensors on the other two lights, or to figure out how to rewire the 3 lights into two circuits….Do you have any other options or suggestions?

  3. Elaine Hoag on September 5th, 2010 9:59 am

    Connecting a light sensored light post but the lights stay on but dont go off. i have one of each black, white and a ground left to connect but where?

  4. David S. Toves on September 20th, 2011 2:49 pm

    I tbuy myself a sensor motion, which the sensor motion wire as three (3) wires (Red; Blk and Wht and light fixture as Blk and Wht my question is how do i do this i know white and white togetter black togetter, so went comes to the sensor motion i tried and put red with black and the white with white and put the black with the black and turn on the switch, which the is on the test, but the light stay on and not (off) just stay on.
    So please can you help and make me understand how to do it, and if i am doing it right i need help and opinion