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wiring a 240V baseboard heater

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Hoping for some help here:

I am wanting to wire a 240V baseboard heater in our basement. Run a line directly from my panel in the garage to the basement.

I purchased a double pole t-stat today..instructions are in spanish and don't have a clue:laughing:

Also the 240v breaker I picked up is the space equal of 4 of those blue switches in the pics below.

I need to install a new breaker in my panel that seems it wont fit a 240V breaker. See the photos below However, there is a breaker with green tape on it ironically already labelled baseboard heaters. if you zoom in on the pics you can get a good look at it. This is not in use right now based in the pics could i tap into this breaker with the appropriate wire? It seems there is only 120 v wire on this double switch. (White and black wire)

My understanding is i run the wire from the panel to the t-stat then to the baseboard heater. Any tips would be greatly appreciated about wiring this up correctly. What colored wires go from the panel to the t-stat and then to the heater?

Also im very confused about a new breaker in the panel itself how it would fit or if i could use the existing one with the green tape on it.

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The breaker with the green tape on it is indeed 240 volt, provided it has a handle tie, like the other 240 volt breakers. The handle tie is the little silver thing between the two handles, like the green (30 amp) and gray (40 amp) breakers.

It's 15 amp, so the minimum wire size is #14.

Using black or red tape (a black or red marking pen will do as well), re-identify the white wire as black or red. Most of us prefer red. Both ends.

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