Dave's Pump Service, Inc

 

Horsepower and Locked Rotor Current Motor Designation for NEMA Design B Motors

 

Table 6-5.1.1 From NFPA# 20 1999 Edition

 

Designation for NEMA Design B Motors Rated Horsepower

Locked Rotor Current Three-Phase 460 V(Ampere)

Motor Designation (NEC, Locked Rotor Indicating Code Letter)"F" To and Including

5

46

J

7 1/2

64

H

10

81

H

15

116

G

20

145

G

25

183

G

30

217

G

40

290

G

50

362

G

60

435

G

75

543

G

100

725

G

125

908

G

150

1085

G

200

1450

G

250

1825

G

350

2200

G

400

2900

G

450

3250

G

500

3625

G