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4-11. 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.
60 Hertz, 1 Phase Models
Input Voltage (V)
Input Amperes (A) At Rated Output
Max Recommended Standard Fuse Rating In
1
Amperes
Time-Delay Fuses
Normal Operating Fuses 3
Min Input Conductor Size In AWG
Max Recommended Input Conductor Length
In Feet (Meters)
Min Grounding Conductor Size In AWG
Reference: 2014 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.
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.
50 Hertz, 1 Phase Models
Input Voltage (V)
Input Amperes (A) At Rated Output
Max Recommended Standard Fuse Rating In Amperes
Normal Operating Fuses 3
Min Input Conductor Size In AWG
Max Recommended Input Conductor Length In Feet (Meters)
Min Grounding Conductor Size In AWG
Reference: 2014 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.
With Power Factor Correction
208
66.0
2
80
100
4
8
72
(22)
4
8
1
2
Time-Delay Fuses
4
4
230
460
575
59.6
29.8
23.9
70
35
25
90
45
35
8
12
14
88
143
145
(27)
(44)
(44)
8
12
14
With Power Factor Correction
220
72.5
90
110
8
71
(22)
8
Without Power Factor Correction
200
230
460
92.4
80.4
40.2
110
100
50
150
125
60
6
8
10
90
78
211
(27)
(24)
(64)
6
8
10
380
42.0
50
60
10
142
(43)
10
OM-321 Page 15
575
32.1
40
50
12
202
(62)
12
440
36.3
45
50
12
116
(35)
12