Miller Electric 250 Welder User Manual


 
OM-353 Page 17
3-10. Electrical Service Guide
All values calculated at 60% duty cycle.
NOTE
60 Hertz Models
Without Power Factor
Correction
With Power Factor Correction
Input Voltage
200 230 460 575 200 230 460 575
Input Amperes At Rated Output
85 74 37 30 55 48 24 19
Max Recommended Standard Fuse Or Circuit
Breaker Rating In Amperes
125 110 60 45 80 70 35 30
Min Input Conductor Size In AWG/Kcmil
4 6 10 10 8 8 12 14
Max Recommended Input Conductor Length
In Feet (Meters)
173
(53)
158
(48)
291
(89)
455
(139)
86
(26)
114
(35)
186
(58)
189
(48)
Min Grounding Conductor Size In AWG/Kcmil
6 6 10 10 8 8 12 14
Reference: 1996 National Electrical Code (NEC) S-0092-J
50 Hertz Models Without Power Factor Correction
With Power Factor
Correction
Input Voltage
220 260 380 415 520 220 380 415
Input Amperes At Rated Output
77 65 45 41 33 64 37 34
Max Recommended Standard Fuse Or Circuit
Breaker Rating In Amperes
125 100 70 60 50 90 60 50
Min Input Conductor Size In AWG/Kcmil
6 6 8 8 10 6 10 10
Max Recommended Input Conductor Length
In Feet (Meters)
145
(44)
202
(62)
291
(89)
347
(106)
372
(113)
145
(44)
291
(89)
347
(106)
Min Grounding Conductor Size In AWG/Kcmil
6 8 8 10 10 6 8 10
Reference: 1996 National Electrical Code (NEC) S-0092-J