Tools
Customer tools provide handy reference guides.
- Click to view chart: Welding Cable Amperage Chart
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AMPS 100' 150' 200' 250' 300' 350' 400' 100 4 4 2 2 1 1/0 1/0 150 4 2 1 1/0 2/0 3/0 3/0 200 2 1 1/0 2/0 3/0 4/0 4/0 250 1 1/0 2/0 3/0 4/0 300 1/0 2/0 3/0 4/0 350 1/0 3/0 4/0 400 2/0 3/0 450 2/0 4/0 500 3/0 4/0 550 3/0 4/0 600 4/0 Required Cable Sizes Show in Gauge Numbers *The total circuit length includes both welding and grounds leads (based on 4-volt drop) 60% duty cycle.
These values for current-carrying capacity are based on a copper temperature of 60°C (140°F), an ambient temperature of 40°C (104°F) and yield load factors from approximately 32% for the 2 AWG cable to approximately 23% for the 3/0 AWG cable. In actual service, the load factor may be much higher than indicated without overheating the cable as the ambient temperature will generally be substantially lower than -40°C.
- Click to view chart: Suggested Ampacities For 600 Volt In-Line Applications
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Suggested Ampacities For 600 Volt In-Line Applications AWG Amperes AWG Amperes 4/0 315 1 170 3/0 275 2 150 2/0 235 3 130 1/0 300 4 110 6 85 Per standards: ICEA S-19-18 NEMA WC-3 Part 8, Appendix J.
Ampacities for portable cable, continuous duty (Ambient Temperature of 40°C)