Electrical Feeder Calculator

Need to get the code required feeder for a specific ampacity and circuit requirements?

Enter the information below to select the circuit specifications and get your feeder calculated automatically.

Enter Feeder Information

Electrical Load Information

Feeder Size:

Amps

System:

Wire Information

Wire Insulation:

Maximum Wire Size:

Phase/Neutral Material:

Neutral Information

Neutral Wires:

Current Carrying Neutral:

Ground Information

Number of Ground Wires:

Ground Type:

Ground Material:

Conduit Information

Conduit Type:

Maximum Conduit Size:

Calculation Results

Enter information and click on the "Calculate" button to get the results.

Voltage Drop Information¹

	Maximum Length⁵
2% Voltage Drop
3% Voltage Drop
5% Voltage Drop

Notes:

¹Power Factor is assumed to be 0.90

²Temperature Rating assumed to be 75°C

³Weights are approximate and do not include insulation weights

⁴Values Per 1000 feet

⁵Maximum length is based on a load that is 80% of the fuse size

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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.