According to a first embodiment of the invention {HEAD ~ a welding machine} includes a power source and {TAIL ~ a wire feeder} 
According to a first embodiment of the invention { HEAD ~ a welding machine } includes a power source and { TAIL ~ a wire feeder }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL