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Old 12-23-2010, 01:08 PM   #1
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120v baseboard joined to receptacle


Hi folks, hoping someone can answer a question for me:

I am wondering if the following electrical wiring run is recommended safe.......

--I have a new 12/2 wire run from my panel box to a 120v receptacle using a 20A breaker. I plan to use a 1500w plug in style heater on this receptacle.

Can I continue on from that receptacle with 12/2 wire and connect a hard-wired 4ft 1000w 120v baseboard heater to it (with either wall mount or built in thermostat)?

I realize this is not preferred due to the possibility of someone being able to plug in another electrical device to that receptable and flipping a breaker.... but is this scenario safe in theory?

Please advise. Thanks for your help!!!

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Old 12-23-2010, 01:16 PM   #2
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120v baseboard joined to receptacle


You want to connect 2500w of heat on a 2400w watt circuit ??

No, not safe IMO

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Old 12-23-2010, 01:34 PM   #3
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120v baseboard joined to receptacle


I agree with scuba dave, this is not a good idea. Of course it could be done, but there will be a breaker tripping for sure.
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Old 12-23-2010, 01:42 PM   #4
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120v baseboard joined to receptacle


Thanks for the replies guys. Yes, I see now that i am bumping up too closely to the maximum. Glad I am still in the theoretical here.

Ok, let's forget about the 1500w plug in heater and break it down to simply this..... assuming there is no other load on the circuit (just the baseboard) is it acceptable to continue on from the receptacle with 12/2 wire and connect a hard-wired 4ft 1000w 120v baseboard heater to it?
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Old 12-23-2010, 01:52 PM   #5
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120v baseboard joined to receptacle


Quote:
Originally Posted by DragonFire View Post
Thanks for the replies guys. Yes, I see now that i am bumping up too closely to the maximum. Glad I am still in the theoretical here.

Ok, let's forget about the 1500w plug in heater and break it down to simply this..... assuming there is no other load on the circuit (just the baseboard) is it acceptable to continue on from the receptacle with 12/2 wire and connect a hard-wired 4ft 1000w 120v baseboard heater to it?
Where is the receptacle located, what is it's purpose?
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Old 12-23-2010, 02:22 PM   #6
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Where is the receptacle located, what is it's purpose?
My plan was to install a new 120v receptacle in a back room for use with a 750w/1500w plug in style heater, and then connect an additional 1000w 120v hard wired baseboard in an adjoining room. I only have 1 available circuit breaker slot in my 200A panel (due to the original electrician running lots of 15A single receptacle circuits and filling it up). Therefore I need to make this last circuit run count, and wanted to have a maximum of 2500w of current available for the 2 heaters.

It would be 12/2 wire, and I originally thought a 20A breaker would suffice. I was wrong. Assuming it is acceptable to join the baseboard to the receptacle as described above, I either need to increase the breaker to 25A, or forget about being able to run the 1500w plug in heater.

Thoughts?
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Old 12-23-2010, 02:24 PM   #7
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It's my understanding that as long as the baseboard heater doesn't consume more than 50% of the branch circuit rating where other outlets are connected to the same circuit it would be okay
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Old 12-23-2010, 02:35 PM   #8
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It's my understanding that as long as the baseboard heater doesn't consume more than 50% of the branch circuit rating where other outlets are connected to the same circuit it would be okay
Thanks Steelhead, that answers the biggest concern I had. Now, regarding the circuits, would a 25A breaker (not common I understand) or 30A breaker (overkill in this case) be acceptable in this situation given 12/2 wiring with a maximum continuous wattage of 2500w?
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Old 12-23-2010, 02:38 PM   #9
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120v baseboard joined to receptacle


A 20a breaker is the largest you can use in this case w/#12 wiring
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Old 12-23-2010, 02:40 PM   #10
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A 20a breaker is the largest you can use in this case w/#12 wiring
OK, there we have it. Now I know what I can and can't do... and will have to formulate my battle plan. Thanks so much for all your help guys.
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Old 12-23-2010, 02:40 PM   #11
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Absolutely not.
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Old 12-23-2010, 02:42 PM   #12
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A 20A breaker is the max for 12 awg NM.
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Old 12-23-2010, 06:16 PM   #13
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120v baseboard joined to receptacle


Since this circuit does not exist yet why not run two separate circuits?
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Old 12-23-2010, 06:53 PM   #14
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120v baseboard joined to receptacle


A standard receptacle may be fed by a circuit rated for at most 20 amps.

If a baseboard heater shares the circuit, the usefulness of the receptacle is greatly reduced.
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Old 12-24-2010, 08:54 AM   #15
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they make breakers that fit in one space and have two circuits

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