Filter
Top Products
OM-222 166 Page 12
4-4. Electrical Service Guide
Failure to follow these electrical service guide recommendations could create an electric shock or fire hazard. These recommenda-
tions are for a dedicated branch circuit sized for the rated output and duty cycle of the welding power source.
50 Hz
Three
Phase
60 Hz Three Phase
Input Voltage 400 460 575
Input Amperes At Rated Output 60 50 40
Max Recommended Standard Fuse Or Circuit Breaker Rating In Amperes
1
Circuit Breaker
1
, Time-Delay
2
70 61 45
Normal Operating
3
80 70 60
Min Input Conductor Size In AWG
4
6 8 8
Max Recommended Input Conductor Length In Feet (Meters)
254
(77)
214
(65)
334
(102)
Min Grounding Conductor Size In AWG
4
8 8 10
Reference: 2005 National Electrical Code (NEC) (including article 630)
1 If a circuit breaker is used in place of a fuse, choose a circuit breaker with time-current curves comparable to the recommended fuse.
2 Time-Delay fuses are UL class RK5 .
3 Normal Operating (general purpose - no intentional delay) fuses are UL class K5 (up to and including 60 amp), and UL class H ( 65 amp and above).
4 Conductor data in this section specifies conductor size (excluding flexible cord or cable) between the panelboard and the equipment per NEC Table
310.16. If a flexible cord or cable is used, minimum conductor size may increase. See NEC Table 400.5(A) for flexible cord and cable requirements.
Notes