Motor Locked Rotor Current Calculator

Calculate locked rotor current from motor code letter per NEC Table 430.7(B).

Motor rated HP.
HP
From NEC Table 430.7(B): A=0-3.15, B=3.15-3.55, ..., G=5.6-6.3, H=6.3-7.1.
kVA/HP
Motor rated voltage.
V
1 for single-phase, 3 for three-phase.

Results

Locked Rotor Amps-A
Locked Rotor kVA-kVA
Est Full Load Amps-A
References: NEC Table 430.7(B); NEC Table 430.248/250; NEMA MG 1