What size wire should be used for grounding the battery cabinet

Ground wire also defined as grounding electrode conductor, is a connection between ground rod and service ground connection. Ground wires for commercial buildings are made with copper #6 (6 AWG) or larger. For 200 Amp services, a #4 (ground wire) is required What size ground wire for 60 amps? There is 10 AWG ground wire used for 60 amps.

For every wire, you will need a ground wire. As you may know, the ground wire doesn't have to be as big as the main wire. Example: 1 AWG copper wire doesn't require a 1 AWG copper ground wire. It requires a 6 AWG copper ground wire. A ground wire size chart that follows will tell you exactly the size of the grounding conductor you need.

You can check what size wire you need for 100 amps here. To figure out the size of the ground wire, you consult the copper grounding conductor size chart, and you see that you need an 8 AWG copper ground wire for 3 AWG copper wire (for 100 amps, you can use 8 AWG copper ground wire).

On the above charge for copper ground wire size, there is a need 2 AWG copper ground wires for handling 250 kcmil wire. So there is a need of 2AWG copper ground wire for 200 Amp service. How big aluminum ground wire do you need for a 00 AWG aluminum wire?

Calculate the size of ground wire for a given circuit or motor by selecting the ampere rating of the circuit protection device.

Chart below shows Minimum cable size to use (AWG wire). Fine Stranded Stereo wire makes great battery cable giving the best gage wire for proper battery charge. The fine stranded wire will pass more amperage than course stranded wire that has a lower "strand count".