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14-3 Question

1054 Views 13 Replies 5 Participants Last post by  jbfan
I'm in the process of finishing my basement and i've been tracing some wiring to see what's on each breaker. Few questions:

Two owners before us there was an elderly woman who had a chair lift going up the stairs. There is a 14-3 wire going to this plug on the landing on a 15 amp double pole breaker (i believe that's the term). why would they run a 14-3 on a 15amp breaker for just that? What is the benefit of the 14-3 in this case?

We have a new high efficiency furnace (60,000btu - smaller furnace). what size wire & breaker should it be on?

Thanks for the help, i'm sure i'll have more questions soon.
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It sounds like the chair was on a 240v circuit but at 15A. While unusual, not unheard of.
i just realized i should check if the smoke detector at the top of the stairs is hard wired, because the 14-3 might be used to get power there correct?

What i wanted to do was remove the 14-3 all together and fish some 14-2 up to the stairwell plug and also power a few potlights on the same circuit. It's taking up a lot of room on the panel for what seems like one plug.
cornation71 said:
i just realized i should check if the smoke detector at the top of the stairs is hard wired, because the 14-3 might be used to get power there correct?

What i wanted to do was remove the 14-3 all together and fish some 14-2 up to the stairwell plug and also power a few potlights on the same circuit. It's taking up a lot of room on the panel for what seems like one plug.
Is it a single or duplex receptacle at the top of the stairs?
Duplex. I'm Going To Open It Up Tonight. I Bet there Will Be An Interrupted hot Going To The Smoke Detector.
Be careful when you take it apart it could be a MWBC I would make sure the breaker is off when digging into this.
Can I Change The Double Pole For A Tandem breaker? That Way I Would Free Up A Pole On The Panel.
If it is a Multi-Wire Branch Circuit (MWBC) you will need to keep the double pole breaker. The MWBC shares a neutral and the hots need to come from different legs in your panel to make it work.
i took the plate off the receptacle and there is a black, red, white and ground as suspected. Only one 14-3 coming in, nothing going out. The red and black are each on their own screw, the white on the other side (silver) and ground is grounded. So i think i might just rip this wire right out and fish up a new 14-2 to that receptacle and also wire a few potlights on the same circuit. I'll need to be positive there is nothing else on the existing 14-3 line first.
Is the tab broken between the black and red wire?
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^ what tab? (sorry i'm not extremely well versed in electrical)
^ what tab? (sorry i'm not extremely well versed in electrical)
On the receptacle?
just googled what you meant. I'll have to check tomorrow. So if the tab is broken, then each half of the duplex outlet would be powered by it's own 15A breaker correct?
just googled what you meant. I'll have to check tomorrow. So if the tab is broken, then each half of the duplex outlet would be powered by it's own 15A breaker correct?
That is correct, if the the circuit is wired correctly.
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