Below is a table of values ​​for welding: Material up to 1.5 mm from 40 to 60 Ampere with 1.6 mm electrode Material from 2 to 3 mm from 60 to 70 Ampere with 2 mm electrode Material from 2 to 5 mm from 80 to 100 Ampere with 2,5 mm electrode Material from 3 to 10 mm from 100 to 130 mm with 3,2 mm electrode Material from 5 and + mm from 130 to 160 Ampere with 4mm electrode