OM-927 Page 16
3-12. Electrical Service Guide
60 Hz Single
Phase
Input Voltage 200 230
Input Amperes At Rated Output 29 25
Max Recommended Standard Fuse Rating In Amperes
Circuit Breaker 1, Time-Delay 235 30
Normal Operating 345 35
Min Input Conductor Size In AWG 412 12
Max Recommended Input Conductor Length In Feet (Meters) 60
(18) 79
(24)
Min Grounding Conductor Size In AWG 412 12
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.
YCaution: Failure to follow these fuse and circuit breaker recommendations could create an electric shock or fire hazard. These
recommendations are for a dedicated branch circuit that applies to the rated output and duty cycle of the welding power source.