Appendix i: circuit protection & wiring – Tweco CE Ultima 150 User Manual
Page 41
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Manual 0-2530
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APPENDICES
APPENDIX I: CIRCUIT PROTECTION & WIRING
Recommended Circuit Protection and Wire Sizes
Input
Power Input
Current
Recommended Sizes
Voltage
Freq.
3-Ph
3-Ph
Fuse (Amps)
Wire (AWG)
(Volts)
(Hz)
(kVA)
(Amps)
3-Ph
3-Ph
380
50/60
6
12
15
14
415
50/60
6
12
15
14
Line Voltages with Recommended Circuit Protection and Wire Sizes (Based on Table
310-16, 1987 National Electric Code) and Table 4, Canadian Electrical Code.
NOTES
An energy-limiting fuse UL Class RK-1 (examples: BUSS LPS/
LPN-RK or Gould-Shawmut AZK-A6K) should be used to mini-
mize damage to plasma welding, plasma cutting, and power distri-
bution equipment.
NEVER use replaceable element fuses like UL Class H, or "one-
time" fuses like UL Class K5.
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