cable size for main earth

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timtheenchanteruk

Well-Known Member
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4,633
Location
Leeds
what it says really, fitting a battery isolator, just need to know what size cable I need to get for it, went to get some today, but everything they had seemes woefully undersized compared to whats there already.

I have 2 earths coming back the batt, dont know if this is standard or not, one looks about 16mm the other larger maybe 35mm?? 'the only stuff they had is looked to be about 16, obviously not as big as these two combined.
 
I think two earths back to the battery is normal. One from the chassis near the battery tray the other to the stud on the gearbox next to that.

Auto electrical supplies will sell battery cable by the meter. I used 25mm2 for wiring up my split charge and making jump leads via Anderson connectors. That cable was rated at 170amp.

Battery Cable - Flexible
 
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