I don't have much info yet.all i know is it's a 8ft electric baseboard heater and it's missing the thermostat on the wall.The wire is there.Not sure if its 120v. or 240v.Dont know the brand.My question is when i see it what should i look for so i can purchase the correct thermostat.I think i've install two t-stats in my career so i'm kinda egnorant about what to do to install this correctly.Thank you for your help.
Electric baseboard heater missing thermostat
- Thread starter zappy
- Start date
- Status
hardworkingstiff
Senior Member
- Location
- Wilmington, NC
What if it is an older building and they just broke 1-leg of the 240-volt circuit? Then it would have 2-wires but be a 240-volt stat?
You should have two sets of hot wires at the stat location....2 line and 2 load. As for the voltage of the circuit, look at the breaker. 1- or 2-pole?
BryanMD
Senior Member
or there is a relay and trans tucked away somewhere and it is a 24v stat?
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
Just purchase a DP wall thermostat and save yourself a trip. The DP will work even if it is 120v. FWIW, I have never seen an 8 foot baseboard heater that wasn't 240V. Usually they are 250 watts per foot. Thus an 8' heater is 2000 watts.
electricmanscott
Senior Member
- Location
- Boston, MA
Agreed, unless as Bryan pointed out there is a relay and 24v tstat. I'd ask the customer what the wire looks like, if there is a box or just wires sticking out of the wall before I made the trip.
Thanks for the help.
Thanks for the help.
Thanks for the help.
So what should i do if this is the case?Get a 24v t-stat i'm guessing?Thanks.
BryanMD
Senior Member
I was being (90%) facetious. These set ups are rare.
My point was that you need to see for yourself what EXACTLY is there before making assumptions about whaat might or could or even should be there. KNOW don't guess.
Just came from the job...
Just came from the job...
I saw a 12-2 romex coming in to the t-stat.At the baseboard heater there's two 12-2 romex's,one with 240v. and one goes to the t-stat.It's a honeywell.I saw in the baseboard heater j-box a yellow and red wire that looks like it goes to the element.Then there's this do-dad with two blk wires coming out of it,maybe some kind of relay??So can anyone explain in lameman terms how this works.I'm very curious what the do-dad is and how the t-stat controls the power.It looks like it controls only one leg?Thank you.
Just came from the job...
I saw a 12-2 romex coming in to the t-stat.At the baseboard heater there's two 12-2 romex's,one with 240v. and one goes to the t-stat.It's a honeywell.I saw in the baseboard heater j-box a yellow and red wire that looks like it goes to the element.Then there's this do-dad with two blk wires coming out of it,maybe some kind of relay??So can anyone explain in lameman terms how this works.I'm very curious what the do-dad is and how the t-stat controls the power.It looks like it controls only one leg?Thank you.
hardworkingstiff
Senior Member
- Location
- Wilmington, NC
The do-dad is probably a thermal cut out safety switch. DO NOT bypass it.
The T-stat appears to be breaking just one leg like you would to a light. One leg of the 240-volt circuit goes to the heater or do-dad and you send the other leg to the switch box (t-stat). Come back from the t-stat to the other lead of the heater or do-dad.
hardworkingstiff
Senior Member
- Location
- Wilmington, NC
Hmmmm. I can't find 'do-dad' in my Codebook.
You need to buy the black market code handbook. :smile:
but what about the yellow and red wire in the j-box?Thank you.:smile:
J-box for the stat? Line & load if it's run in conduit.
hardworkingstiff
Senior Member
- Location
- Wilmington, NC
Yes, put the ohm meter on the wires that go to the element.
zappy, your profile says you're an EC. How long have you been an EC (just curious)?
no the j-box on the heater there's a yellow and red wire that i am not sure how to connect.
Is it run in conduit?
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