Core TradesQuestion 181 of 700
Using a volume allowance of 2.0 cubic inches per 14 AWG conductor, what is the MINIMUM box volume required for a box containing eight 14 AWG conductors (no devices or clamps)?
a.12.0 cubic inches
b.14.0 cubic inches
c.16.0 cubic inches
d.18.0 cubic inches
Explanation
Eight conductors x 2.0 cubic inches each = 16.0 cubic inches minimum. The lower figures undercount conductors, and 18.0 overcounts them; box fill must be at least the sum of the individual conductor allowances.
Law Reference: 2025 CA Electrical Code, Article 314 (Outlet Boxes)Practice all 700 questions free — no signup required.
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