Hello all! I have a question that I can't seem to find the answer to. I am wiring a bedroom and am trying to determine if I can wire a receptacle and junction out to another receptacle box and an exterior motion light. Basically, I want to feed a deep single gang receptacle box for the receptacle. My question is can I then junction out to another receptacle down the wall about 8 feet, but also junction up to an exterior motion light? Can all of these wires be in a deep box? I do not understand how the NEC calculates number of conductors and air space. I understand it, but it doesn't satisfy me with my question of whether I can do this or not.
This is in a bedroom that is in the corner of my house adjacent to the front sidewalk.
Calculations based on cubic inches of box and wire guage. NEC Table 314.16(b)
22.8 cu in. non-metallic box using 14/2 wire = 11 conductors.
count 2 for wiring device, 1 for each colored wires, 1 for clamps (if needed), all grounds combined =1
The deep plastic box is 20,5 cu in. Since there are no clamps it will work.
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