[dirty_denim86]

Hey,

I'm looking to place an electrical outlet behind my TV and was wondering if there were any regulations against using a PVC Gang box for old work similar to the one below:

http://www.homedepot.com/p/Carlon-2-Gang-34-cu-in-Heavy-Wall-Old-Work-Box-BH234R/100177871

Simple install just running 12/2 romex from existing outlet to a new one behind the Television. I live in Canada and noticed that that homedepot.ca doesn't have any of the PVC boxes for old work and was wondering if there was a reason behind it. They do have the new work boxes but I'd like to minimize the drywall damage.

The gang that I am going to extend off of is a metallic box I have heard that you must feed only max 1 romex per hole? I was just wondering if that is the code?

Any feedback would be appreciated!

Thanks

 

[joecaption]

Why not use a recessed box like this so the plugs not sticking out of the wall and you can run all the other cables in the same box?
http://www.homedepot.com/p/Pass-Seymour-3-Gang-Recessed-Wall-Box-TV3LVKITWCC2/202702667

 

[dirty_denim86]

Why not use a recessed box like this so the plugs not sticking out of the wall and you can run all the other cables in the same box?
http://www.homedepot.com/p/Pass-Seymour-3-Gang-Recessed-Wall-Box-TV3LVKITWCC2/202702667

That would definitely work.

If the outlet I am extending off of is a metal box would it be a code violation to stick another romex into a section where there is already one? The top two holes are already used but to put the romex through the bottom of the metal gang box would be really difficult.

 

[joecaption]

When I'm hanging a TV on a wall I find it a lot easier to cut out the drywall to run the wiring, and add blocking let into the wall for the wall mount.

 

[e60]

That would definitely work.

If the outlet I am extending off of is a metal box would it be a code violation to stick another romex into a section where there is already one? The top two holes are already used but to put the romex through the bottom of the metal gang box would be really difficult.

It depends on the specific box I think as to whether or not you are allowed to put two romex through the same clamp. Regardless which hole you use, I think you also need to watch out for the box fill limitations? You are going to be bringing in 2 more #12 wires into a small device box that presumably already has 4 #12's, along with the device and you are going to need to add some wire nuts in there if it is not already pigtailed right?

Also, you need to watch out for the number of devices already on the circuit? I am not sure but I think even with 20A breaker you are still limited to 12 outlets or lights.

 

[Oso954]

but I think even with 20A breaker you are still limited to 12 outlets or lights.

No, not in the USA.

 

[e60]

No, not in the USA.

There is no rule on number of outlets per circuit at all in the USA?

Here for sure there is a rule about 12 devices per circuit, with there being an exception I think if you can prove the connected devices will never exceed the 80% rule of the breaker. I don't know the specifics of it though, I only have a simplified electrical code book that I use and it does not dive into details that I saw.

btw the OP indicated he was in Canada.

 

[jbfan]

There is no rule on number of outlets per circuit at all in the USA?

Here for sure there is a rule about 12 devices per circuit, with there being an exception I think if you can prove the connected devices will never exceed the 80% rule of the breaker. I don't know the specifics of it though, I only have a simplified electrical code book that I use and it does not dive into details that I saw.

btw the OP indicated he was in Canada.

Local codes may limit the amount of receptacles, but not the NEC.

What 80% rule?

 

[e60]

Local codes may limit the amount of receptacles, but not the NEC.

What 80% rule?

That the breakers are only rated for 80% of their load, so you have to take that into consideration when calculating the load of the circuit to try and apply the exception of having more than 12 devices on the circuit based on the expected load.