Which statement is incorrect?
1
12 SWG electrodes for welding can be used up to 3 mm plates
2
10 SWG electrodes for welding can be used up to 5 mm plates
3
6 SWG electrodes for welding can be used up to 10/15 mm plates
4
8 SWG electrodes for welding can be used up to 30 mm plates