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OM-235 281 Page 19
3-13. 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.
60 Hz Single
Phase
Input Voltage 200 230
Input Amperes At Rated Output 37.0 32.5
Max Recommended Standard Fuse Rating In Amperes
Circuit Breaker
1
, Time-Delay
2
45 40
Normal Operating
3
60 50
Min Input Conductor Size In AWG
4
10 10
Max Recommended Input Conductor Length In Feet (Meters)
77
(23)
102
(31)
Min Grounding Conductor Size In AWG
4
10 10
Reference: 2005 National Electrical Code (NEC) (including article 630)
1 Choose a circuit breaker with time-current curves comparable to a Time Delay 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.