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5-2.
Electrical Service Guide
Failure to follow these electrical service guide recommendations could create an electric shock or fire hazard. These recommen-
dations are for an individual branch circuit sized for the rated output and duty cycle of one welding power source. In individual
branch circuit installations, the National Electrical Code (NEC) allows the receptacle or conductor rating to be less than the rating
of the circuit protection device. All components of the circuit must be physically compatible. See NEC articles 210.21, 630.11, and
630.12.
NOTICE – Actual input voltage should not be 10% less than minimum and/or 10% more than maximum input voltages listed in table. If actual in-
put voltage is outside this range, output may not be available.
Rated Supply Voltage (V)
Rated Maximum Supply Current I
Rated Effective Supply Current I
Maximum Recommended Standard Fuse Rating In Amperes
Time Delay Fuses
2
Normal Operating Fuses
3
Maximum Recommended Supply Conductor Length In Feet (Meters)
Raceway Installation
Minimum Supply Conductor Size In AWG (mm
Minimum Grounding Conductor Size In AWG (mm
Reference: 2020 National Electrical Code (NEC) (including article 630)
Rated Supply Voltage (V)
Rated Maximum Supply Current I
Rated Effective Supply Current I
Maximum Recommended Standard Fuse Rating In Amperes
Time Delay Fuses
2
Normal Operating Fuses
3
Maximum Recommended Supply Conductor Length In Feet (Meters)
Raceway Installation
Minimum Supply Conductor Size In AWG (mm
Minimum Grounding Conductor Size In AWG (mm
Reference: 2020 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 Maximum total length of copper input conductors in entire installation, raceway and/or flexible cord.
5 Raceway 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) and is based on allowable ampacities of insulated copper conductors having a temperature rating of 75°C (167°F)
with not more than three single current-carrying conductors in a raceway.
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 Maximum total length of copper input conductors in entire installation, raceway and/or flexible cord.
5 Raceway 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) and is based on allowable ampacities of insulated copper conductors having a temperature rating of 75°C (167°F)
with not more than three single current-carrying conductors in a raceway.
(A)
1max
(A)
1eff
1
2
)
5
2
)
5
(A)
1max
(A)
1eff
1
2
)
5
2
)
5
50/60 Hz 1-Phase
208
240
81.5
71.9
53.9
48.4
90
80
100
100
4
92 (28)
82 (25)
6 (16)
8 (10)
6 (16)
8 (10)
50/60 Hz 3-Phase
208
240
43.4
39.8
25.1
22.4
50
50
60
60
4
72 (22)
93 (28)
10 (6)
10 (6)
10 (6)
10 (6)
460
575
48.7
39.8
27.6
25.1
60
45
70
50
163 (50)
255 (78)
10 (6)
10 (6)
10 (6)
10 (6)
460
575
25.7
22.0
14.2
12.0
30
25
35
30
129 (39)
215 (66)
14 (2.5)
14 (2.5)
14 (2.5)
14 (2.5)
OM-288360 Page 17
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