Feeder Sizing Calculator

Size feeder conductors and protection based on total connected load per NEC 215.

Total continuous load (3+ hours).
A
Total non-continuous load.
A
Ambient temperature.
°C
One-way feeder length.
ft
System voltage (line-to-line).
V

Results

Min Conductor Ampacity-A
Min OCPD Rating-A
Est Voltage Drop at Full Load-%
References: NEC Article 215; NEC 215.2; NEC 215.3