Appendix i: input wiring requirements – Tweco 3000 Merlin User Manual
Page 55
Manual 0-2532
A-1
APPENDIX
APPENDIX I: INPUT WIRING REQUIREMENTS
NOTE
An energy limiting fuse UL Class RK-1 (examples: BUSS LPS/LPN-RK or Gould-Shawmut AZK-A6K) should be
used to minimize damage to Plasma Cutting or Welding, and power distribution equipment.
NEVER
use replaceable element fuses like UL Class H, or "one-time" fuses like UL Class K5.
Input
Power Input
Current
Recommended Sizes (See Note)
Voltag
e
Freq.
3-Ph
3-Ph
Fuse (Amps)
Wire (AWG)
Wire (Canada)
(Volts)
(Hz)
(kVA)
(Amps)
3-Ph
3-Ph
3-Ph
200
50/60
34
98
110
AWG 2
2
208
50/60
34
95
110
AWG 2
2
220
50/60
34
89
100
AWG 2
2
230
50/60
34
85
100
AWG 4
2
380
50/60
34
51
60
AWG 6
6
415
50/60
34
47
60
AWG 8
6
460
50/60
34
42
50
AWG 8
6
506
50/60
34
40
45
AWG 8
6
575
50/60
34
34
40
AWG 8
6
Line Voltages with Recommended Circuit Protection and Wire Sizes
(Based on Table 310-16, 1987 National Electric Code) and Table 4, Canadian Electrical Code.