Automotive Battery Cable Size Chart

Now choose the next largest cable size from the table below.

Automotive battery cable size chart. Our battery cable is american made and comes in gauge awg sizes of 6 4 2 1 1 0 2 0 3 0 and 4 0 with 6 gauge being the smallest and 4 0 gauge being the largest. For very long cables for example 15 foot long battery cables to relocate your battery go one size larger. So you now have a cross sectional area for your cable. In summary when selecting the correct size of battery cable you need to take into account the total maximum amperage your electrical system requires the voltage of your system usually 12 volts the total length that your cables need to be and the amount of voltage drop you are willing to accept versus the amount you want to spend.

Download excel versions of our cable calculators from our free resources page a bonus voltage drop calculator. Mm which is 12 awg. Most of the cost is the ends and labor. Outside engine compartments the ambient temperature should generally be 20 c.

The manufacturers make stock battery cables as small as possible but still get the job done. I recommend building cables larger than stock. Choose a higher ambient temperature when conductors are expected to pass through. Battery cable is used to power your electrical system and is sized according to the american wire gauge or awg for short specification for electrically conductive cables.

Mm cable then go up to 3 3 sq. Going up a size or 2 is worth it in the long run.