Any electrode holder that will accommodate the size of rod can be used. Twin Carbon Arc Welding requires a specific holder. Air Carbon Arc Gouging requires a special holder that also supplies a stream of air.

Contradiction in terms. If its "non-fusion" then it isn't welding. You probably mean brazing.

The specification for an E6013 is AWS A5.1, which is for carbon steel electrodes for shielded metal arc welding.

The 'arc' in arc welding is not an acronym but in turn is a reference to the electric arc that is being generated during the welding process.

If you are asking for the correct nomenclature it is Shielded Metal Arc Welding.