Electrical Service Guide - Miller Electric MPi 220P Owner's Manual

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.
Input Voltage (V)
Input Amperes (A) At Rated Output
Max Recommended Standard Fuse Rating In Amperes
Min Input Conductor Size In AWG
Max Recommended Input Conductor Length In Meters (Feet)
Min Grounding Conductor Size In AWG
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.
1
2
Time-Delay Fuses
3
Normal Operating Fuses
4
4
50/60 Hz
Single Phase
230
37
45
60
6 (10)
29
(95)
6 (10)
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