2 seperate feeds to a 120v receptacle

[nickbrunetti]

I was wondering if the NEC allows you to split the tab on a 120v 20A receptacle and bring seperate phases to each hot. The only reason I ask is becouse im confused on the rating thats on the duplex. Is it 120v 20A for each side or 120v 20A total.

 

[Dennis Alwon]

I was wondering if the NEC allows you to split the tab on a 120v 20A receptacle and bring seperate phases to each hot. The only reason I ask is becouse im confused on the rating thats on the duplex. Is it 120v 20A for one side or 120v 20A total.

Each one is 20 amps. So, yes you could do what you stated but you would need a dp breaker.

 

[nickbrunetti]

Do you know if there is somewhere that I can find this in writing becouse the inspector does not agree with me.

 

[nickbrunetti]

is there some place where i can confirm this, becouse the electrical inspector is giving me problems with what i want to do

 

[LarryFine]

Welcome to the forum, Nick! :smile:

is there some place where i can confirm this, becouse the electrical inspector is giving me problems with what i want to do

Try 210.7(B).

 

[Mr.Sparkle]

From the 2005 Handbook:

 

[LarryFine]

So, which applies, 210.4(B) or 210.7(B)?

 

[Jraef]

The handle tie is an important element in this by the way. A classic example is the receptacle found under a sink, one for the garbage disposal, the other for the dishwasher. Both together is too much for one 20A circuit, so you run two sets of conductors and split the duplex receptacle, then tie it to a double pole CB. I had an apprentice do it once on a retrofit where he used 1/2 space breakers to squeeze them in, the AHJ bounced it because they could not have their handles tied together. The reason is, you don't want someone to plug a circuit finder into one receptacle to find the breaker to turn it off before working on it, only to discover when he opens the box that the other one is still hot! Tying the handles together means when you turn one off, you turn them both off before entering that box.

 

[infinity]

is there some place where i can confirm this, because the electrical inspector is giving me problems with what i want to do

A duplex receptacle is two receptacles. Each individual receptacle will have an ampacity based on it's configuration.

What Article did he cite as making this not permissible? That's usually where I will start when discussing a topic that I'm being told is not permissible. Typically when they can't come up with that Article they change their mind.

 

[roger]

So, which applies, 210.4(B) or 210.7(B)?

Either one. Do you want to call it one circuit or multiple circuits?

Add another neutral if you want and 210.7(B) is on it's own.

Roger

 

[LarryFine]

I had an apprentice do it once on a retrofit where he used 1/2 space breakers to squeeze them in, the AHJ bounced it because they could not have their handles tied together.

You don't suppose he had both lines on the same phase, do you?

 

[LarryFine]

Either one. Do you want to call it one circuit or multiple circuits?

Add another neutral if you want and 210.7(B) is on it's own.

I asked because they are worded identically, which I found amusing.

But, then, I'm easily amused. See?

 

[Barjack]

I asked because they are worded identically, which I found amusing.

I don't think they are identical. 210.4(B) is for multiWIRE branch circuits (2 or 3 ungrounded conductors, 1 neutral), and 210.7(B) is for MULTIPLE branch circuits (1 ungrounded/1 grounded per circuit) on the same yoke or equipment. The same overcurrent protection rules apply (2 or 3 pole breaker), but an example of 210.7(B) would be 2 12/2 NM's to 1 duplex receptacle with the grounded and ungrounded tabs broken?