EROWATOM
New Member
Obviously there is a clear relevance, Thanks.For welding cable the chart here: https://www.directwire.com/resources/welding-cable-ampacity-chart/#jumptoampacitychart gives some ideas. but it does not allow for enclosed areas and also voltage drop. Many of the charts you find on line are not terribly helpful other than as a starting point.
Remember you have to use round trip cable length.
The only issue is that the shortest distance in that table is 50 feet. Also, the bottom of the table has a "Note2" that says: distance from power source (per lead), so I don't think we have to use the round trip distance.
Bottom line: I feel good about running (up to) 150A through my 3 foot 4AVG battery wire.