To conduct a research on the double-electrode gas metal arc surfacing with an additional current-carrying filler wire (DE-GMAW), bead surfacing was performed at different feed rates of the electrode and filler wires, varying the polarity of the arcs, measuring the current and voltage of the main arc and the current flowing from the filler wire to consumable electrode. It is shown that when the process is carried out with the main arc of reverse polarity and an additional arc is initiated between the consumable electrode and the current-carrying filler wire, the main arc current is redistributed from the base to the filler, which increases the deposition rate with a simultaneous decrease in the penetration of the base metal. It is determined that the melting factor of the filler wire in this case is significantly higher than that of the main arc of reverse polarity, which happens due to a higher cathode voltage drop on the filler wire, significant heating of the main arc by plasma torch, and also a lower temperature of the filler droplets.