Box Fill Calculator
Calculate maximum number of conductors allowed in junction boxes per NEC Article 314.16
NEC 2023 Article 314.16NEC 2023 Table 314.16(A)
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Calculate maximum number of conductors allowed in junction boxes per NEC Article 314.16
Each counts as 2 conductors
All count as 1 conductor
Each counts as 1 conductor
Enter values and click Calculate to see results.