residential wiring

[jamesbelliott]

I ran 12 circuits of 12/2, one 12/3 and one 10/3 nm-b down a wall inside the house and into an outdoor panel through a 2" romex connector. I was told this would produce too much heat and be a fire hazard. I can't find in the NEC a maximum number of nm-b wires that can legally go through a 2" connector. Is the connector considered a raceway, or a fitting? Also I have 10 outlets with 4 lights on a single 20 amp circuit and I was told this was too many and I needed to split them. He said that the NEC had a maximum number of devices that could go on a circuit. Is this true? I never seen or heard of such a thing; 10 devices is how I have done branch circuits for years and I never had a problem before. Help please.

 

[bphgravity]

Re: residential wiring

The 2" connector has listing that will specify the amount of conductors that can be installed with it. See article 312.5(C). Per 310.15(B)(2), where multiconductor cables are stacked or bundled longer than 24" without maintaining spacing and are not installed in raceways, the ampacity of of each conductor shall be reduced per Table 310.15(B)(2)(a). These means that you may end up having to incresea your wire size to meet the demand of the load. The code does not specify a maximum amount of outlets that are allowed on any one circuit. However, there is maximum calculated load per wire size and the OCD.

 

[a.wayne3@verizon.net]

Re: residential wiring

We went thru this on the 99 code change....1 in.romex connectors are rated at 6 12/2 nm cables,
that is the largest listed size romex co9nnector that can be used to terminate nm in a panel.As far as the overloaded circuit....what article did the ahj site >>>.