Product Brochure

51
Accessories
Accessories
NEC Box Requirements*
Cubic Inches for 1–40 Conductors
36
36-PFC
40-UB
NCC1-50
* Make allowance of two additional conductors for each device, one for clamps if required and one for one or more grounding
conductors entering the box. See NEC314.16(B). 2005
WIRE
SIZE
AWG
CUBIC INCH CAPACITY BY NUMBER OF CONDUCTORS
1234567891011121314151617181920
18 1.50 3.00 4.50 6.00 7.50 9.00 10.50 12.00 13.50 15.00 16.50 18.00 19.50 21.00 22.50 24.00 25.50 27.00 28.50 30.00
16 1.75 3.50 5.25 7.00 8.75 10.50 12.25 14.00 15.75 17.50 19.25 21.00 22.75 24.50 26.25 28.00 29.75 31.50 33.25 36.00
14 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 22.00 24.00 26.00 28.00 30.00 32.00 34.00 36.00 38.00 40.00
12 2.25 4.50 6.75 9.00 11.25 13.50 15.75 18.00 20.25 22.50 24.75 27.00 29.25 31.50 33.75 36.00 38.25 40.50 42.75 45.00
10 2.50 5.00 7.50 10.00 12.50 15.00 17.50 20.00 22.50 25.00 27.50 30.00 32.50 35.00 37.50 40.00 42.50 45.00 47.50 50.00
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
18 31.50 33.00 34.50 36.00 37.50 39.00 40.50 42.00 43.50 45.00 46.50 48.00 49.50 51.00 52.50 54.00 55.50 57.00 58.50 60.00
16 36.75 38.50 40.25 42.00 43.75 45.50 47.25 49.00 50.75 52.50 54.25 56.00 57.75 59.50 61.25 63.00 64.75 66.50 68.25 70.00
14 42.00 44.00 46.00 48.00 50.00 52.00 54.00 56.00 58.00 60.00 62.00 64.00 66.00 68.00 70.00 72.00 74.00 76.00 78.00 80.00
12 47.25 49.50 51.75 54.00 56.25 58.50 60.75 63.00 65.25 67.50 69.75 72.00 74.25 76.50 78.75 81.00 83.25 85.50 87.75 90.00
10 52.50 55.00 57.50 60.00 62.50 65.00 67.50 70.00 72.50 75.00 77.50 80.00 82.50 85.00 87.50 90.00 92.50 95.00 97.50 100.00
Accessory Clamps and Ground Strap
CAT. NO. DESCRIPTION
STD. CTN.
QTY.
36 Metal stamped clamp and screw unassembled 50
36-PFC Non-metallic clamp 50
40-UB Ground strap for phenolic boxes 50
NCC1-50 Non-metallic cable lock clamp for strain relief of non-metallic cable 500 (10 bags of 50)
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