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LV Handbook › Conduit fill calculator

Conduit fill calculator

OD from the reference table (typical manufacturer values). Edit it to match the spec sheet. NEC-Ch9-2023.

62.3%

of 0.864 in² (1 EMT) · 8 cables → limit 40%

Over limit

Recommended size 1-1/4 EMT · 36.0% fill

Limits: 1 cable 53%, 2 cables 31%, over 2 cables 40%.

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