Arc Welding Cable, 90°C 600V

Yes. Longer welding circuits often require a larger conductor to keep voltage drop within an acceptable range.
Resistance increases as cable length increases, which means more voltage can be lost between the welding machine and the arc. When selecting cable size, consider both the welding current and the complete circuit length rather than amperage alone. Custom Cable Corp.'s welding cable sizing information accounts for both variables.

Total circuit length includes both the electrode lead and the return or work lead.
For example, a welding setup with a 75-foot electrode lead and a 75-foot work lead has a total circuit length of 150 feet for sizing purposes. Looking at only one lead can underestimate the resistance in the complete circuit and result in selecting a conductor that is too small. The Custom Cable Corp. sizing table specifically bases its recommendations on total circuit length.

Excessive voltage drop can reduce the voltage available at the arc and affect welding performance.
Welding operates at relatively low secondary voltages, so voltage lost through the leads can represent a meaningful portion of the available welding voltage. Larger conductors reduce resistance and help preserve voltage over longer cable runs. This is why cable length becomes increasingly important as welding amperage and distance increase.

Yes. A higher duty cycle can increase cable heating because current flows for a greater portion of the operating period.
Cable sizing should consider how much current the welder draws as well as how long that current is carried during each operating cycle. A cable suitable for intermittent welding may not be appropriate for an application operating for longer periods at the same amperage. Custom Cable Corp.'s published welding-cable sizing table is based on a 60% duty cycle, so applications outside those conditions should be evaluated accordingly.

An undersized welding cable can create excessive voltage drop and unwanted heat in the welding circuit.
The longer the cable and the greater the welding current, the more important conductor size becomes. Using too small a conductor can waste energy as heat and reduce the voltage delivered to the welding point. Selecting cable based on amperage, circuit length, and operating conditions helps maintain more consistent welding performance and reduces unnecessary heating.