11. electrical service guide – Hobart Welding Products CYBER FLEX 302 User Manual
Page 22
OM-277 Page 18
3-11. Electrical Service Guide
60 Hertz Models
300 Amp Model
450 Amp Model
Input Voltage
200
230
460
575
200
230
460
575
Input Amperes At Rated Output
69
60
30
24
104
90
45
36
Max Recommended Standard Fuse Rating In Amperes
1
Time-Delay
2
80
70
35
30
125
110
50
45
Normal Operating 3
100
90
45
35
150
125
70
50
Min Input Conductor Size In AWG/Kcmil
4
6
10
10
2
3
8
8
Max Recommended Input Conductor Length In Feet (Me-
ters)
225
(69)
203
(62)
367
(112)
573
(175)
173
(53)
191
(58)
287
(87)
448
(137)
Min Grounding Conductor Size In AWG/Kcmil
8
8
10
10
6
6
8
10
Reference: 1999 National Electrical Code (NEC)
1 Consult factory for circuit breaker applications.
2 “Time-Delay” fuses are UL class “RK5” .
3 “Normal Operating” (general purpose – no intentional delay) fuses are UL class “K5” (up to and including 60 amp), and UL class “H” ( 65 amp and
above).
50 Hertz Models
300 Amp Model
450 Amp Model
Input Voltage
380
400
440
380
400
440
520
Input Amperes At Rated Output
36
34
31
52.5
51
46
38
Max Recommended Standard Fuse Rating In Amperes
1
Time-Delay
2
45
40
35
60
60
50
45
Normal Operating 3
50
50
45
80
80
70
60
Min Input Conductor Size In AWG/Kcmil
8
8
8
6
6
8
8
Max Recommended Input Conductor Length In Feet (Me-
ters)
370
(113)
409
(125)
495
(151)
342
(104)
379
(115)
303
(92)
423
(129)
Min Grounding Conductor Size In AWG/Kcmil
10
10
10
8
8
8
10
Reference: 1999 National Electrical Code (NEC)
1 Consult factory for circuit breaker applications.
2 “Time-Delay” fuses are UL class “RK5” .
3 “Normal Operating” (general purpose – no intentional delay) fuses are UL class “K5” (up to and including 60 amp), and UL class “H” ( 65 amp and
above).