Battery Cable Wire Size Chart

The wire sizing guide below provides the minimum wire size needed to limit voltage drops to 5 at a given distance in a 12v or 24v system.

Battery cable wire size chart. For very long cables for example 15 foot long battery cables to relocate your battery go one size larger. Sae wire gauge size and amperage for a d c. The fine stranded wire will pass more amperage than course stranded wire that has a lower strand count. American wire gauge size calculator and chart.

The n gauge wire diameter d n in inches in is equal to 0 005in times 92 raised to the power of 36 minus gauge number n divided by 39. 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. Battery wire size per voltage amperage load and length chart below shows minimum cable size to use awg wire. As far as i know these values are valid as of today.

So all interconnecting cables are 2 0 based on the chart below. Going up a size or 2 is worth it in the long run. If you want to limit your losses to 2 simply divide the distance by 2 5. D n in 0 005 in 92 36 n 39.

Wire gauge calculations wire diameter calculations. Cable size ampacity chart. Actually for my current installation i ve sized all of my dc cables to meet the 175 amp worst case scenario. The following maximum amps versus cable size awg come from the nec version 2011.

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. I recommend building cables larger than stock. Fine stranded stereo wire makes great battery cable giving the best gage wire for proper battery charge. The manufacturers make stock battery cables as small as possible but still get the job done.

Voltage system allowing a 20 voltage drop. For a 48v system multiply the distance taken from the 24v chart by 2. 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. Spartan power 2 foot 1 0 awg 0 gauge battery cable set made in america many wire lengths to choose from 2 foot 3 8 ring terminals 4 8 out of 5 stars 62 34 00 34.