Pull Box Sizing

Determine the minimum dimension of a pull box or junction box for conductors 4 AWG or larger based on raceway configuration.

Pull Configuration

Largest Raceway (Inches)

Sum of Other Raceways (Inches)

Pro Tip: Removable Covers

If a box has a removable dimension that makes it easy to install, the minimum width rules can often be reduced to the dim. of the largest raceway. See CEC 12-3036(3).

Minimum Box Dimension

16.0Inches

Required straight-away or angled distance.

For straight pulls, the distance between opposite entry/exit walls must be 8x the largest raceway.

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