Baseboard heater upgrades

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Matthew&Jaymie
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Joined: Thu Aug 17, 2017 5:30 am
Location: Peterborough, ON

Baseboard heater upgrades

Post by Matthew&Jaymie » Thu Oct 24, 2019 5:15 pm

Hey all!

Currently in the middle of my latest "honey get off your butt list" which includes upgrading our ancient baseboard heaters to modern efficient bad boys.
Our main common area, which includes 2 heaters.
Heater 1 = 2000 Watt

Heater 2 is a forced air (fan) heater at 1250 watts

According to the calculation were drawing upwards of 13.5 amps. Since we've purchased this house, this common area circuit is on a 30 amp breaker. I feel as if it should only be a 20.

The question I have is...
The wiring to heater 2 (forced air heater) which was upgraded before us purchasing the house, has a 10-2 AWG wire running between thermostat and heater.

Heater 2 is only a 12 AWG wire (standard baseboard heater) and 12 AWG from panel to thermostat.

Both heaters controlled by same thermostat.

Should I be upgrading my wire to 10-2 AWG or stepping down to a 20 amp circuit?


**Bonus Question :)

Our new smart baseboards are right side wired, and my previous baseboard was left side wired. The connection wire within the baseboard is a 14 AWG and my line feed is 12 AWG. I'm thinking I'm going to have to run a jumper wire from right side, to left side and use the junction box on the left side to make my connection to the feed. What's your thoughts or recommendations? Should I use 12 AWG wire for my jumper between sides?

Thanks in advance!

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emtnut
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Re: Baseboard heater upgrades

Post by emtnut » Thu Oct 24, 2019 6:45 pm

Matthew&Jaymie wrote:
Thu Oct 24, 2019 5:15 pm

Heater 1 = 2000 Watt

Heater 2 is a forced air (fan) heater at 1250 watts


The question I have is...
The wiring to heater 2 (forced air heater) which was upgraded before us purchasing the house, has a 10-2 AWG wire running between thermostat and heater.

Heater 2 is only a 12 AWG wire (standard baseboard heater) and 12 AWG from panel to thermostat.

Both heaters controlled by same thermostat.
I can answer your questions, but I think you meant Heater #1 for the #10 wire.
Can you confirm ?
~~ Ford Ford Ford Ford Ford Ford :mrgreen: ~~

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Matthew&Jaymie
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Location: Peterborough, ON

Re: Baseboard heater upgrades

Post by Matthew&Jaymie » Fri Oct 25, 2019 5:11 am

emtnut wrote:
Thu Oct 24, 2019 6:45 pm
[I can answer your questions, but I think you meant Heater #1 for the #10 wire.
Can you confirm ?
Thanks Emtnut!
Heater 1 is only a 12 wire and heater 2 is a 10 wire.
Backwards right? Lol...

Heater 1 was originally a 1750 watt heater, but I couldn't find 1 that size within the dimplex brand. I made the decision to use a 2000 watt, as I felt I had the amps to spare within the circuit. I feel it should only be a 20 amp circuit rather then a 30.
Thanks again!

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emtnut
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Re: Baseboard heater upgrades

Post by emtnut » Fri Oct 25, 2019 5:58 am

Matthew&Jaymie wrote:
Fri Oct 25, 2019 5:11 am
Thanks Emtnut!
Heater 1 is only a 12 wire and heater 2 is a 10 wire.
Backwards right? Lol...

Heater 1 was originally a 1750 watt heater, but I couldn't find 1 that size within the dimplex brand. I made the decision to use a 2000 watt, as I felt I had the amps to spare within the circuit. I feel it should only be a 20 amp circuit rather then a 30.
Thanks again!
Yep, sounds backwards !

It's OK to run a 30A with #10 to the first heater, and then downsize wire for the next in line (some restrictions on that, main one being that the 2nd heater is not more than 7.5M from the 1st heater)

If your run from the panel is #12 and continues on with #10 to the next heater, then you definitely need a 20A DP breaker.

... And the Bonus Question ... If the heater has a knockout on only the right side, then yes you can use the left side box as a junction box. It would need #12 (still sized for the breaker).
Double check your unit, most have knockouts on either side (not all thou)

Mfr can get away with smaller wire sometimes within their units ... Their wiring isn't inside the walls is the main reason.
~~ Ford Ford Ford Ford Ford Ford :mrgreen: ~~

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Matthew&Jaymie
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Location: Peterborough, ON

Re: Baseboard heater upgrades

Post by Matthew&Jaymie » Sat Oct 26, 2019 9:50 am

Thanks Emtnut.

We got it all situated now, few more to go now, hopefully they go smoother!

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emtnut
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Re: Baseboard heater upgrades

Post by emtnut » Sun Oct 27, 2019 7:04 am

Matthew&Jaymie wrote:
Sat Oct 26, 2019 9:50 am
Thanks Emtnut.

We got it all situated now, few more to go now, hopefully they go smoother!
Let us know if you run into any other issues.

One thing I forgot to mention, keep an eye out for the Watt rating of your new t-stats. Some of the newer 'digital' ones have a 2000W max load rating. Just make sure your rating is above the heater(s)
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