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Branch Circuit Conductor and Overcurrent Protection Calculator Version 2 (NEC 2026)
Project Name
Continuous Load, Amps
Non-Continuous Load, Amps
No. of Current Carrying Conductors (CCC)
1-3
4-6
7-9
10-20
21-30
31-40
41 and above
Measurement System
Imperial (Feet / Fahrenheit)
Metric (Meters / Celsius)
Ambient Temperature (
°F
)
Max Parallel Runs to Calculate
Calculate Voltage Drop?
Yes
No
Voltage (1 to 1000V)
Power Factor (0.01 to 1.0)
Circuit Length (
Feet
)
Three Phase or Single Phase
Three Phase, 3∅
Single Phase, 1∅
Conductor Operating Temperature (
°F
)
Conduit Material
PVC
Aluminum
Steel
Max Allowable Voltage Drop Percent (%)
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