4-12. 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.
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Input Voltage | 230 | 460 | 575 | |
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Input Amperes At Rated Output | 180 | 90 | 72 | |
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Max Recommended Standard Fuse Rating In Amperes 1 |
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225 | 110 | 90 | ||
Normal Operating 3 | 250 | 125 | 110 | |
Min Input Conductor Size In AWG 4 | 3/0 | 3 | 4 | |
Max Recommended Input Conductor Length In Feet (Meters) | 204 | 337 (103) | 438 (134) | |
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Min Grounding Conductor Size In AWG 4 | 4 | 6 | 6 | |
Reference: 2005 National Electrical Code (NEC) |
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1If a circuit breaker is used in place of a fuse, choose a circuit breaker with
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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).
4Conductor 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.
4-13. Placing Jumper Links
! Disconnect and lockout/tag- out input power before installing or moving jumper links.
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Tools Needed:
3/8 in
Check input voltage available at site.
1 Jumper Link Label
Check label − only one is on unit.
2 Jumper Link
Move jumper links to match input voltage, and label on unit.
Close and secure access door, or go on to Section
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Do not overtighten jumper link nuts.
Ref. 802 295
