Conduit Fill Tables

Need to find the number of conductors that will fit in a specific conduit? Simply select the conductor's insulation and then the conduit type and get the wire fill for each size.

Enter Information

Insulation:

Conduit Type:

Notes:

¹Ampacity is based on 75°C Rating for a copper conductor. You can get the specific ampacity and conductor properties for a wire using our General Wire Calculator or our Specific Wire Calculator.

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No guarantees are made as to the accuracy of the calculation or compliance with local codes. Verify all calculations with a professional engineer. If you find an error, or have a suggestion, please send us an email.