Baldor 23H Series, Installation & Operating Manual

Page: 103 / 127

Appendix D
Recommended Wire Sizes and Protective Devices
This control must be provided with a suitable input power protection device. Use the recommended
fuses or circuit breaker listed on Table 2.1 which follows. Input and output wire size is based on the
use of 75 degree C rated copper conductor wire. The table is specified for NEMA B motors.
Circuit Breaker 3 phase, thermal magnetic. Equal to GE type THQ or TEB for 230VAC
or GE type TED for 460VAC, and 575VAC.
Fast Action Fuses Buss KTN on 230VAC or Buss KTS on 460VAC, Buss FRS on
575VAC or equivalent.
Time Delay Fuses Buss FRN on 230VAC or Buss FRS on 460VAC, 575VAC or equivalent.
Table 2.1A Series 23H 230VAC Control Wire Size and Protective Devices
230VAC Controls
NOTE: ALL WIRE SIZES BASED ON 75° C COPPER WIRE, 40°C AMBIENT, 3%
LINE IMPEDANCE. HIGHER TEMPERATURE SMALLER GAUGE WIRE MAY
BE USED PER NEC AND LOCAL CODES.
APPENDIX D
5-4
Catalog No. Max CT Input Input Fuse Input Fuse Wire Gauge
HP Breaker Fast Acting Time Delay AWG
SD23H2A03-E 1 15A 15A 15A 14
SD23H2A04-E 2 20A 20A 15A 14
SD23H2A07-E 3 30A 30A 15A 14
SD23H2A10-E 5 40A 40A 20A 12
SD23H2A15-E 7.5 60A 60A 30A 10
SD23H2A22-E 10 80A 80A 40A 8
SD23H2A30-ER 15 60A 60A 60A 4
SD23H2A45-ER 20 75A 75A 75A 3
SD23H2A55-ER 25 100A 100A 100A 2
MN723H-10/95 11/28/95 1:16 AM Page 104 (Black plate)