20amp 2pole on 12/3 wire

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Re: 20amp 2pole on 12/3 wire

Originally posted by electricmanscott:
Originally posted by LarryFine:
Originally posted by electricmanscott:
You can take that spare and feed 1/2 of a 20 amp duplex behind the fridge and then you can plug in your portable cord and plug connected under cabinet light without violating 210.52 (B) (3).
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But then aren't you required to use a 20-amp duplex, since each half of said receptacle is now a single receptacle, as specified in 210.21(B)(1)?
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I'll just assume you were sleepy when you posted this. :D
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More tongue-in-cheek than sleepy, but I'm sure the argument could be made. To wit:

If we get to call a duplex not a single device, because there are two receptacles, then why couldn't one say that each half of a duplex qualifies as a device, and a single device at that.

To restate: if a duplex is two devices, then it is two single devices on a yoke. Anyone else want to fall into, I mean, contribute to this discussion?

Edited to add:Okay, now I see that you specified a 20-amp receptacle when you said it. Was that in line with my point, or would you say that a 15-amp duplex could be used on a 3-wire 20-amp circuit the way it can be used on a single 20-amp circuit?

[ September 04, 2005, 05:13 PM: Message edited by: LarryFine ]
 
Re: 20amp 2pole on 12/3 wire

Oops!

[ September 04, 2005, 05:12 PM: Message edited by: LarryFine ]
 
Re: 20amp 2pole on 12/3 wire

Larry a duplex receptacle is without a doubt two receptacles.

Easy test for this.

How many appliances can you plug into a duplex receptacle? ;)
 
Re: 20amp 2pole on 12/3 wire

Oh if you want to call a duplex two devices you can do that as well, the NEC already does.

2002 NEC
210.4(B) In dwelling units, a multiwire branch circuit supplying more than one device or equipment on the same yoke shall be provided with a means to disconnect simultaneously all ungrounded conductors at the panelboard where the branch circuit originated.
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Re: 20amp 2pole on 12/3 wire

So it is correct that a split-wired receptacle fed via a 3-wire, 20-amp circuit cannot be a 15-amp receptacle, yes?
 
Re: 20amp 2pole on 12/3 wire

Originally posted by LarryFine:
So it is correct that a split-wired receptacle fed via a 3-wire, 20-amp circuit cannot be a 15-amp receptacle, yes?
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Assuming those are the only receptacles on the circuits I agree with you. :)
 
Re: 20amp 2pole on 12/3 wire

Larry, my point is that I aggree with you and that is actually what I had in my post. I figured you just missed it.
 
Re: 20amp 2pole on 12/3 wire

So it is correct that a split-wired receptacle fed via a 3-wire, 20-amp circuit cannot be a 15-amp receptacle, yes?
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Your correct. But a split wired 20amp duplex receptacle can be on a 15 amp circuit as there will only be one receptacle on each circuit.
Still not a good design though. :p
 
Re: 20amp 2pole on 12/3 wire

Originally posted by hurk27:
...a split wired 20amp duplex receptacle can be on a 15 amp circuit as there will only be one receptacle on each circuit.
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Not according to Table 210.21(B)(3), which says that a 20a receptacle cannot be on a 15a circuit.
 
Re: 20amp 2pole on 12/3 wire

Originally posted by LarryFine:
Originally posted by hurk27:
...a split wired 20amp duplex receptacle can be on a 15 amp circuit as there will only be one receptacle on each circuit.
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Not according to Table 210.21(B)(3), which says that a 20a receptacle cannot be on a 15a circuit.
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Larry the devil is in the details.

Table 210.21(B)(3) does not apply to single receptacle circuits, only multiple outlet circuits.

It's like the NEC wants to trip us up sometimes. :D
 
Re: 20amp 2pole on 12/3 wire

So we could place a 30a or 50a receptacle on a 15a circuit?

[ September 07, 2005, 09:44 PM: Message edited by: LarryFine ]
 
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