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Kevin
Kevin, Licensed Electrician
Category: Electrical
Satisfied Customers: 2926
Experience:  29 years as a Licensed Electrical Contractor in Illinois, 5 year college Electrical Instructor, Former Electrical Inspector, Diploma in Digital Electronics, Former Illinois Licensed Home Inspector
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How do I add a thermostat to my electrical baseboard heater.

Customer Question

How do I add a thermostat to my electrical baseboard heater. My wire onlky goes to my heater, so I need to run a wire from my heater to my thermostat and I need to know the combination between the different color wires.
Submitted: 10 months ago.
Category: Electrical
Customer: replied 10 months ago.
It's a wall thermostat heater that I want to install.
Expert:  Kevin replied 10 months ago.

Hello and welcome to Just Answer. My name is ***** ***** I will be happy to assist you with your electrical question.

1) Is the baseboard heater a 120 volt or a 240 volt type?

2) How many amps is the circuit breaker for the baseboard?

Customer: replied 10 months ago.
240 volt. 30 amps . there is only this heater hooked to this breaker.
Expert:  Kevin replied 10 months ago.

Thanks for the confirmation.

1) Since the circuit is a 240 volt, the T-Stat needs to be a double pole T-Stat.

2) From the 30 amp double pole breaker, you will need 10 AWG Copper conductors........ie.........2 hot conductors and 1 ground wire that will originate from the main electrical panel and will terminate to the T-Stat LINE side. The T-Stat LINE side will be labeled as "L1 & L2". This is the hot circuit feed connection into the T-Stat.

3) Out of the T-Stat and connecting to the LOAD side, will be labeled as "T1 & T2". Install 10 AWG copper conductors from the T-Stat to the baseboard heater.

4) Connect the ground wire to the baseboard heater.

Customer: replied 10 months ago.
My heater (located on the second floor of my house) is already connected to the panel (located in the basement). I have already a thermostat directly on the heater but I want to replace it and have a wall heater.
Expert:  Kevin replied 10 months ago.

The circuit feed must first feed into the wall T-Stat and then out to the heater.

Expert:  Kevin replied 10 months ago.

I created a wiring diagram for you. See attached:

This is how the T-Stat and baseboard heater must be wired.

Customer: replied 10 months ago.
Thank you.
Expert:  Kevin replied 10 months ago.

No problem, glad to assist. Stay warm:)

If you have any additional questions, just let me know and I’ll be glad to answer them for you.

Otherwise, don’t forget to rate me before you log Off.

Thanks.............Kevin:)

Expert:  Kevin replied 10 months ago.

If you have any additional questions, just let me know and I’ll be glad to answer them for you.

Otherwise, don’t forget to rate me before you log Off.

Thanks.............Kevin:)

Expert:  Kevin replied 10 months ago.

If you have any additional questions, just let me know and I’ll be glad to answer them for you.

Otherwise, don’t forget to rate me before you log Off.

Thanks.............Kevin:)

Customer: replied 10 months ago.
Kevin,This is what I have:
- coming from panel to T-Stat, 1 black, 1 red, 1 green
- T-Stat: 2 black wires
- going from T-Stat to heater: 1 black, 1 red, 1 green
- heater: 1 black, 1 redHow do I connect all this ? Your drawing does not refer to any red color but white.
Customer: replied 10 months ago.
I don't have a double pole T-Stat
Expert:  Kevin replied 10 months ago.

1) My drawing is generic as there are numerous wire color combinations that can be installed for branch circuit wiring.

2) Take a look at the double pole circuit breaker wires, they are most likely a black and a red for the 2 hot wires.

3) The black and red are the 240 volt branch circuit conductors......ie........same as my drawing except a different wire color was used in your application. Same concept applies.

4) A 240 volt heater requires a double pole T-Stat and not a single pole T-Stat. Single pole T-Stats are only used on 120 volt heaters.

Expert:  Kevin replied 10 months ago.

If you have any additional questions, just let me know and I’ll be glad to answer them for you.

Otherwise, don’t forget to rate me before you log Off.

Thanks.............Kevin:)

Expert:  Kevin replied 10 months ago.

If you have any additional questions, just let me know and I’ll be glad to answer them for you.

Otherwise, don’t forget to rate me before you log Off.

Thanks.............Kevin:)

Expert:  Kevin replied 10 months ago.

If you have any additional questions, just let me know and I’ll be glad to answer them for you.

Otherwise, don’t forget to rate me before you log Off.

Thanks.............Kevin:)

Expert:  Kevin replied 10 months ago.

If you have any additional questions, just let me know and I’ll be glad to answer them for you.

Otherwise, don’t forget to rate me before you log Off.

Thanks.............Kevin:)

Expert:  Kevin replied 10 months ago.

If you have any additional questions, just let me know and I’ll be glad to answer them for you.

Otherwise, don’t forget to rate me before you log Off.

Thanks...............Kevin:)

Expert:  Kevin replied 10 months ago.

If you have any additional questions, just let me know and I’ll be glad to answer them for you.

Otherwise, don’t forget to rate me before you log Off.

Thanks...............Kevin:)

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