I have been purchasing my consumables for sometime and I have just been buying the consumables that were purchased by the manager before me but as I was reading the manuel for my Hypertherm Powermax 1000 (which I do on occasion in case I missed somethng) I have noticed that there are "Shielded" and "Unshielded" consumables. We use a air compresser on are plasma cutter but I am wondering what that would be considered as Shielded or Unshielded? We mainly cut light gauge material (28ga - 20ga galvanized) and every once in awhile some thicker materials. As of right now I purchase the 40A & 60A shielded consumables because thats what the guy before me purchased but as I have gone over things that he did in the past 90% of the things that he did were wrong and now I am second guessing myself. I have tried to find where it defines this in the manuel but just cant seem to find where it tells you the difference. So my question is am I getting the right consumables and if not which ones are correct?
Thanks for the help everyone.