2-gang plastic box for Range wire?

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inspector23

inspector23

Senior Member
Location
Temecula, CA
I am at a loss as to where I would find a definitive answer in the 2002 NEC for the following "violation".

There is a two-gang nail-in (new construction) blue plastic box located in the kitchen for the?range wiring. The range will use three 8AWG wires with a bare copper ground.

Why is this a violation? It meets the conductor fill calculations of 314.6(b).

I would appreciate your help!

Thanks -
 
Re: 2-gang plastic box for Range wire?

Is the box rated to ACCEPT the incoming wire? This *might* be stamped on the box itself. The stamp (on Carlton) is located INSIDE the box between the clamps.
 
Re: 2-gang plastic box for Range wire?

The problem you have is clamping the cable to the box properly. I don't think the clamps on those boxes are listed for cables larger than #10.

A far better option is a deep 5" square box with side bracket and a 2-gang plaster ring.
 
Re: 2-gang plastic box for Range wire?

I'd say it's a 110.3(B) violation.

Try these, I like 'em:
image_range4.gif
 
Re: 2-gang plastic box for Range wire?

iwire...that single gang mud ring won't accept a 50A recep. (2 gang mud ring needed)....and even IF it did, good luck jamming the #8's attached to the device through that opening.

BTW, we are currently putting in 92+ of these things :)

[ January 08, 2006, 12:21 PM: Message edited by: celtic ]
 
Re: 2-gang plastic box for Range wire?

Originally posted by celtic:
iwire...that single gang mud ring won't accept a 50A recep. (2 gang mud ring needed)....and even IF it did, good luck jamming the #8's attached to the device through that opening.
Click to expand...
Maybe the receptacles are bigger in NJ? :)
 
Re: 2-gang plastic box for Range wire?

Bob and other's, I have found some brands of 4 wire 50 and 30 amp receptacle outlets for ranges and dryers will not fit into single gang openings and other brands will. Since this unpleasant discovery on one of my jobs, I since have always planned for the two gang opening with a double gang trim plate. My two cents.. 4-11/16" deep box, 2 gang switch ring, 3/4" romex connector, #10 bonding jumper to the box.
 
Re: 2-gang plastic box for Range wire?

Originally posted by macmikeman:
Since this unpleasant discovery on one of my jobs, I since have always planned for the two gang opening with a double gang trim plate.
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Can't blame you there, that stinks.
 
Re: 2-gang plastic box for Range wire?

The 4-wire receptacles are definitely larger than their 3-wire counterparts, and even the plates required are different.

I used to be macho and use single-gang boxes for these appliance receptacles. I guess I'm getting soft in my old age. :roll:

[ January 08, 2006, 03:20 PM: Message edited by: LarryFine ]
 
Re: 2-gang plastic box for Range wire?

Originally posted by peter d:
Originally posted by georgestolz:
I'd say it's a 110.3(B) violation.

Try these, I like 'em:
:p
Click to expand...
Yup. Me too. I call Allied's boxes "mobile home boxes", because there sure are a lot of them used in mobile homes. They are made of a special kind of fiber that has some sort of artificial intelligence. They break at the worst possbile moment and in the worst possible place. I'll take a Union box over an Allied box, even though they are both fiber boxes. Allied's are worse.
Click to expand...
 
Re: 2-gang plastic box for Range wire?

The 4-wire receptacles are definitely larger than their 3-wire counterparts, and even the plates required are different.
Click to expand...
Larry, believe it or not there is at least one brand that uses the same size plate opening for 3 wire as 4 wire. I am going to have to go dumpster diving to get the brand, or wait until I go back to the supply house cause I am not sure which one it is. Maybe Leviton?
 
Re: 2-gang plastic box for Range wire?

Originally posted by macmikeman:
The 4-wire receptacles are definitely larger than their 3-wire counterparts, and even the plates required are different.
Click to expand...
Larry, believe it or not there is at least one brand that uses the same size plate opening for 3 wire as 4 wire. I am going to have to go dumpster diving to get the brand, or wait until I go back to the supply house cause I am not sure which one it is. Maybe Leviton?
Click to expand...
I'm fairly certain the leviton's are different, because that's the main brand the local orange stores carry here, and I'm sure they are different sizes. I will check.

From what I could find, the 3-wire has a 2.11" face and requires a 2.15" plate hole, while the 4-wire has a 2.44" face and requires a 2.465" plate hole.
 
Re: 2-gang plastic box for Range wire?

We have been using slater 2 gang boxes for range and dryer receptacles for 2 years.Have never been questioned on listings in this time.We went this route to cut down on drywall damage when stubbed out.
 
Re: 2-gang plastic box for Range wire?

Originally posted by allenwayne:
We have been using slater 2 gang boxes for range and dryer receptacles for 2 years.Have never been questioned on listings in this time.
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Just because you have never been questioned does not make it right. How the heck do you get an 8/3 or a 6/3 NM into a slater box without cutting out two or more clamps in a row? Either way it's wrong.

The 10/3 is OK for a dryer
 
Re: 2-gang plastic box for Range wire?

Peter D you don`t fit them in a 2 gang without altering them.Using 8/3 or 6/3.Just another example that an install can pass and be non code compliant I guess. :D
 
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