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Conduit Fill Calculator

Calculate minimum conduit trade size and fill percentage per NEC Chapter 9 Table 1.

2 total
Minimum Conduit Size

EMT 1/2"

Fill Percentage

8.8%

NEC limit: 31% (2 conductors)

Reference: NEC Chapter 9 Table 1 (fill percentages) • NEC Chapter 9 Table 5 (conductor dimensions)

For reference only. Verify with your local building code and a licensed professional before making decisions.

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