CSA/UL versions
For UL designed machines, calculations for cable sections and fuses are done according to
UL508A (Industrial control panels).
For CSA, calculations for cable sections and fuses are done according to CSA22.2 (Canadian
electrical code).
Standard conditions: maximum 3 copper conductors in raceway or cable with 85-90˚C (185-194
˚F) insulation at ambient temperature 30 ˚C (86 ˚F), operating at nominal voltage; cables not
grouped with other cables.
Worst case conditions: ambient temperature > 30 ˚C (86 ˚F), max. 3 copper conductors in
raceway or cable with 85-90 ˚C (185-194 ˚F) insulation at 46 ˚C (115 ˚F) ambient temperature
and operating at nominal voltage. Cables not grouped with other cables.
Fuse size is the max. fuse size in order to protect the motor against short circuit. For CSA fuse
HRC form II, for UL fuse class RK5.
If the local conditions are more severe then the described standard conditions, the cables and
fuses for worst case conditions should be used.
Cable size
Cable size
Frequency
(Hz)
Voltage
(V)
Cable size
GA 11 VSD
CSA/UL AWG
60 460 AWG 6
9.3 Settings for fuses
Settings for fuses
GA 11 VSD
Frequency
(Hz)
Voltage
(V)
Fuses
(A)
CSA/UL CSA HRC Form II/UL
Class 5
60 460 36
Instruction book
API161475 75