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Try these NJES Sample Test Question 10
Commentary Table 314.3 Total Box Fill for Example 3
Items Contained Within Box Volume Allowance Unit Volume Based on Table 314.16(B) (in.3) Total Box Fill (in.3)
6 conductors 2 volume allowances for 14 AWG conductors 2.00 4.00
4 volume allowances for 12 AWG conductors 2.25 9.00
2 clamps 1 volume allowance (based on 12 AWG conductors) 2.25 2.25
2 devices 2 volume allowances (based on 14 AWG conductors) 2.00 4.00
2 volume allowances (based on 12 AWG conductors) 2.25 4.50
Equipment grounding conductors (all) 1 volume allowance (based on 12 AWG conductors) 2.25 2.25