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3-12. 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.
NOTICE − INCORRECT INPUT POWER can damage this welding power source. This welding power source requires a CONTINUOUS supply of input power at rated frequency(+10%) and voltage (+10%). Phase to ground voltage shall not exceed +10% of rated input voltage. Do not use a genera- tor with automatic idle device (that idles engine when no load is sensed) to supply input power to this welding power source.
.Actual input voltage should not exceed ± 10% of indicated required input voltage. If actual input voltage is outside of this range, output may not be available.
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Input Voltage | 230 | 400 | 460 | 575 | |
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Input Amperes At Rated Output | 89.7 | 52.0 | 43.7 | 21.2 | |
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Max Recommended Standard Fuse Rating In Amperes |
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Circuit Breaker 1, | 110 | 60 | 50 | 40 | |
Normal Operating 3 | 125 | 80 | 70 | 50 | |
Min Input Conductor Size In AWG 4 | 3 | 6 | 8 | 8 | |
Max Recommended Input Conductor Length In Feet (Meters) | 173 | 275 | 231 | 361 | |
(53) | (84) | (70) | (110) | ||
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Min Grounding Conductor Size In AWG 4 | 6 | 8 | 8 | 10 |
Reference: 2005 National Electrical Code (NEC) (including article 630)
1Choose 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.