Welding Cable Ampacity Chart

The total circuit length includes both welding and ground leads based on 4 volt drop 60.

Welding cable ampacity chart.

Southwire excelene welding cable extra flexible rated for 50 c to 105 c temperatures. The important specs to go by when choosing the appropriate wire that is suitable for your applications are the wire gauge amp voltage rating and the length needed. Ampacity also known as current carrying capacity or current rating is the maximum amount of current that a cable can safely carry without exceeding its operating temperature rating due to the heat generated from losses and ambient heat around the cable welding cable ampacity is a common source of confusion because it is calculated differently than other types of wire and therefore appears to. Welding cable ampacities single conductor required cable sizes.

Or cable exceeds three or where single conductors or multi conductor cables are stacked or bundled longer than 24 inches without maintaining spacing and are not installed in raceways the allowable ampacity of each conductor shall be reduced as shown in the following table. The number and type of electrical devices connected to a circuit determine the ampacity requirement of the conductor. Besides the cross sectional area other factors that impact the ampacity of welding cable are its length ohm rating i e resistance rating temperature ratings of the insulation. For welding cable application required cable sizes shown in awg numbers.

For welding cable application suggested ampacities for 600 volt in line applications awg amperes awg amperes 4 0 405 1 220 3 0 350 2 190 2 0 300 4 140 1 0 260 6 105 appendix j ampacities for portable cable in accordance with nec table 400 5 a 2. For arc welding cable applications length in feet for total circuit for secondary voltage only do not use this table for 600 volt applications. Ampacities are based on table 400 5 a of the 2017 national electrical code. Usually a general purpose house circuit is designed for 20.

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. The total circuit length includes both welding and grounds leads based on 4 volt drop 60 duty cycle. You must use the correct size wire for the current load requirement of the circuit to prevent the wire from overheating. Current is measured in amperes or amps.

Length is in feet for total circuit for secondary voltages only do not use this table for 600v inline applications. Welding cable ampacities single conductor required cable sizes. Welding cable ampacities the total circuit length includes both welding and ground leads based on 4 volt drop 60 duty cycle required cable sizes.