OM-253 918 Page 19
4-10. Electrical Service Guide
Failure to follow these electrical service guide recommendations could create an electric shock or fire hazard. These
recommendations are for a dedicated branch circuit sized for the rated output and duty cycle of the welding power source.
50/60 Hz
Single Phase
Input Voltage (V)
230
Input Amperes (A) At Rated Output
37
Max Recommended Standard Fuse Rating In Amperes
1
Time-Delay Fuses
2
45
Normal Operating Fuses
3
60
Min Input Conductor Size In AWG
4
6 (10)
Max Recommended Input Conductor Length In Meters (Feet)
29
(95)
Min Grounding Conductor Size In AWG
4
6 (10)
Reference: 2011 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” . See UL 248.
3 “Normal Operating” (general purpose - no intentional delay) fuses are UL class “K5” (up to and including 60 amps), and UL class “H” ( 65 amps 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
310.15(B)(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.
Summary of Contents for MPi 220P
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