Battery Cable Gauge Size Chart

Now lets say that you are using a smaller gauge cable for that same length and your voltage drop is 10.

Battery cable gauge size chart. D n in 0 005 in 92 36 n 39. 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. Battery cable load charts length to load these charts will show length in feet. Here s more about it and a cable size chart.

Now your voltmeter at the other end of your battery cable will read 10 8 volts 12 volts 10 and that same 100 amp current draw will cause your battery cable to absorb 120 watts 10 amps of power leaving only 90 amps available. The n gauge wire diameter d n in millimeters mm is equal to 0 127mm times 92 raised to the power of 36 minus gauge number n divided by 39. Aside from using the american wire gauge or sae wire gauge systems certain automotive cable manufacturers will use three numbers for the wire gauge sizes. Wire gauge calculations wire diameter calculations.

Selecting the proper dc cable size for a solar powered off grid system involves determining the maximum current flow amps from the charger inverter and interconnecting battery terminal cables. The wire size listed in the graph at the intersection denotes the gauge of wire to use. Find the length of the circuit on the vertical axis of the chart noting that the length is the round trip distance from the panel or battery to the load and back. We ve included copper wire specifications which comply with the awg standards at the bottom.

Fine stranded stereo wire makes great battery cable giving the best gage wire for proper battery charge. They don t really understand why it s better. Welding cable tends to be large gauge wire so i think the guys that claim welding cable is the very best stuff to use do so because they are comparing very large 2 0 welding cable to a small 2 gauge battery cable. Voltage system allowing a 20 voltage drop.

A size of 4 0 364 30 indicates the gauge size as well as the strand count. Battery wire size per voltage amperage load and length chart below shows minimum cable size to use awg wire. 4 0 364 30 simply refers to a 4 awg cable made with 364 strands of 30 awg wire. 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.

The fine stranded wire will pass more amperage than course stranded wire that has a lower strand count. Sae wire gauge size and amperage for a d c. 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.