A box-fill worksheet supplies these allowances: conductors 12.0 in³, equipment grounding group 2.0 in³, internal clamps 2.0 in³ and device yoke 4.0 in³. What minimum volume follows from these stated allowances?

NASCLA Electrical exam practice question · Wiring Methods & Materials

A box-fill worksheet supplies these allowances: conductors 12.0 in³, equipment grounding group 2.0 in³, internal clamps 2.0 in³ and device yoke 4.0 in³. What minimum volume follows from these stated allowances?

A12.0 in³
20.0 in³
C16.0 in³
D18.0 in³

Where to look it up

Explicit exercise assumptions; not a universal code requirement.

Why B is correct

Sum every supplied allowance: 12 + 2 + 2 + 4 = 20 in³. The exercise checks aggregation, not the code treatment of an unspecified conductor size, clamp arrangement or NEC edition.

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A box-fill worksheet supplies these allowances: conductors 12.0 in³, equipment grounding group 2.0 in³, internal clamps 2.0 in³ and device yoke 4.0 in³. What minimum volume follows from these stated allowances?

A box-fill worksheet supplies these allowances: conductors 12.0 in³, equipment grounding group 2.0 in³, internal clamps 2.0 in³ and device yoke 4.0 in³. What minimum volume follows from these stated allowances?

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