Nelweld Operations and Service Manual
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3.1.2 Recommended Input Wire and Fuse Sizes
Fuse or Breaker
Size
Specifications
2
Machine
Input
Voltage /
Frequency
Input
Current/
Duty Cycle
Portable
Power
Cable
1
Current Time
Fuse
Rating
(Amps)
Recommended
Fuse
(Super Lag)
208/60 488/6.7% 3/0 601 1.0
150 LPN-RK(250V)RK1
230/60 442/6.7% 3/0 544 1.0
150 LPN-RK(250V)RK1
460/60 224/6.7% AWG 6 275 1.0
100 LPS-RK(600V)RK1
575/60 181/6.7% AWG 6 222 1.0
100 LPS-RK(600V)RK1
220/50 461/6.7% 95mm
2
568 1.0
150 LPN-RK(250V)RK1
380/50 270/6.7% 70mm
2
332 1.0
100 LPS-RK(600V)RK1
400/50 257/6.7% 70mm
2
316 1.0
125 LPS-RK(600V)RK1
415/50 248/6.7% 70mm
2
305
1.0
100 LPS-RK(600V)RK1
Nelweld 4000
440/50 234/6.7% 70mm
2
288
1.0
100 LPS-RK(600V)RK1
208/60
547/23.3%
250 MCM 717 1.4
150
LPN-RK(250V)RK1
or FRN-R(250V)RK5
230/60 496/23.3% 3/0 649 1.4
150
LPN-RK(250V)RK1
or FRN-R(250V)RK5
460/60 253/23.3% 1/0 330 1.4 100
LPS-RK(600V)RK1
575/60 204/23.3% AWG 6 266 1.4 100
LPS-RK(600V)RK1
220/50 518/23.3%
95mm
2
678 1.4
150
LPN-RK(250V)RK1
or FRN-R(250V)RK5
380/50 304/23.3%
70mm
2
397 1.4 100
LPS-RK(600V)RK1
400/50
289/12% #
70mm
2
378 1.4 125
LPS-RK(600V)RK1
415/50 279/23.3%
70mm
2
364 1.4 100
LPS-RK(600V)RK1
Nelweld 6000
440/50 264/23.3%
70mm
2
344 1.4 100
LPS-RK(600V)RK1
1
Four (4) conductor, 600V - 90°C
2
Fuse should break for currents greater than those listed and/or times longer than those listed. Additionally, ensure that the
fuse or breaker is compatible with the listed voltage and maximum instantaneous current.
# For CE-marked, 400V, 50/60Hz units, duty cycle is reduced by 50% due to temperature/rating limits imposed by EN60974-12.
* Please consult local standards.
Verify that all fuses or circuit breakers are suitable for the electrical load applied. Failure to comply
with the recommended input fuse sizes and warnings can result in damage to the Nelweld unit.
Fuses are always preferred over circuit breakers due to the high inrush current
(on the order of 1300A for 1-2 cycles)
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