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Field glossary

Box fill

The cubic-inch volume count for small device and outlet boxes under 314.16, a separate calculation

Used across 2 Anvilfield field guides, most in Electrical.

Also defined as

  • The cubic-inch volume the conductors, device, grounds, clamps, and fittings occupy inside a box

Where this shows up

ElectricalNEC box fill, 314.16ElectricalPull box sizing, 314.28

Related terms

Conduit bodyAWGEGCTrade size

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