Branch Circuit Conductor and Overcurrent Protection Calculator, Mobile

Desktop Version

Continuous Load, Amps

Non-Continuous Load, Amps

No. of Current Carrying Conductors
1-3 4-6 7-9 10-20 21-30 31-40 41 and above
Ambient Temperature
50 or less °F, 10 or less °C 51-59 °F, 11-15 °C 60-68 °F, 16-20 °C 69-77 °F, 21-25 °C 78-86 °F, 26-30 °C 87-95 °F, 31-35 °C 96-104 °F, 36-40 °C 105-113 °F, 41-45 °C 114-122 °F, 46-50 °C 123-131 °F, 51-55 °C 132-140 °F, 56-60 °C 141-149 °F, 61-65 °C 150-158 °F, 66-70 °C 159-167 °F, 71-75 °C 168-176 °F, 76-80 °C 177-185 °F, 81-85 °C

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Optional Inputs for Voltage Drop

Voltage

Circuit Length in Feet

Three Phase or Single Phase
Three Phase, 3∅ Single Phase, 1∅

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Temp: Ampacity, Wire Size, %Voltage Drop

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Desktop Version