Some background: I have a small solar cabin. The cabins electricity runs off a 600 amp hour 24 volt battery. The main battery cables are 4/0 with a 400 amp fuse. The 24V inverters are equipment grounded to Victron negative bus bar using 2/0. (The inverters also have 2/0 conductors). I bought 2/0 because my original single inverter plan was going to use it as the main battery cable. While the 2/0 wire maybe overkill. I didn't like the idea of putting a 250 or 300 amp fuse on 1/0. The cabin floor sits about 2 feet above the ground.
What size should the grounding wire that runs from the lynx distributor to the grounding rod or copper pipe buried in the ground be? Some people say it should be one gauge smaller than the main battery cable. 3/0 would be huge and inflexible unless I use welding wire. I'm afraid the welding wire would corrode. What do other people do? Do you use normal 4 guage air copper grounding wire? Something larger? Thanks for All your suggestions and Happy New Year!
What size should the grounding wire that runs from the lynx distributor to the grounding rod or copper pipe buried in the ground be? Some people say it should be one gauge smaller than the main battery cable. 3/0 would be huge and inflexible unless I use welding wire. I'm afraid the welding wire would corrode. What do other people do? Do you use normal 4 guage air copper grounding wire? Something larger? Thanks for All your suggestions and Happy New Year!