Connection of the optional separate wire feeder, provides dual independent wire feed operation from the machine. The digitally controlled wire feeder can feed any kind of wire with high efficiency. It is completely independent from the power source, a digital communication connects the wire feeder control to the power source and compensates the resistance of the interconnecting cable. An innovative communication system allows the use of interconnecting cables up to 50 meters without affecting the arc. All the welding parameters are easy to set via the front panel of the wire feeder eliminating the need to go to the power source. The wire feeder is robust and developed also for on site welding and is constructed to be lightweight and portable. It can be used with undercarriage wheels for easy movement in the welding area or it can be located on a turning support fixed to the top of the machine. The dimensions are as small as possible, but for a special use where weight must be reduced an adapter to accept smaller spools of wire is available. With this adapter and a 5kg spool of wire installed the maximum weight is 13 kg and this solution is the lightest for off shore, on site transportable requirement. The wire feeder is also ideal for stationary applications where the compact dimensions are important.