Tweco 3000 Merlin - 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.