Electrical

Voltage Drop

Calculates line-to-line or line-to-neutral voltage drop for copper or aluminium conductors and checks it against a limit.

NEC Chapter 9 · VD = K × I × L × 2 or √3 / cmil

Inputs

SystemConductorSystem voltage(V)Load current(A)One-way run length(ft)Conductor size(cmil)#4/0 = 211600, 1/0 = 105600, #2 = 66360Parallel setsAllowable drop(%)

Results

Voltage drop

4.23 V

Percentage drop

1.06 %

Within limit

Voltage at load: 395.8 V
Max length at limit: 709 ft
Compliance: PASS