The invention relates to a hand-operated electric arc welding binding clip, with low contact resistance, high safety and long service life, wherein it comprises binding clip, insulated sheath and insulated handle; the sheath is mounted at the lower part of front part of binding clip; the handle is at the back end of binding clip; the invention is characterized in that: the wiring end of binding clip is in hollow cam shape whose front is big and back is small; inside the binding clip, a taper copper rod is coaxially mounted to move along the axle, while its taper direction and taper degree are same as the wiring end. The invention is used to weld metal. |