When working, just put the drain wire into the wire clip at the lower part of the operating head of the mounting rod in advance, tighten the screw to lock the wire, then hang the installation on the main wire, and then pull the mounting rod down, the lower part of the operating head of the installation bar will move up to the main line, and then clockwise screw the installation bar, the top of the drainage line clamp will lock the main line. After installing the clamp connecting the main lead to the drain line, the gun operator can be used to loosen the drain line by twisting the clamp lock ring of the lock drain line on the mounting rod. Then turn the mounting rod counterclockwise, loosen the locking mechanism of the mounting rod on the main lead wire, and push the mounting rod upward. The wire clamp at the lower part of the operating head of the mounting rod will move down, loosen the clamping on the main lead wire, and withdraw the mounting rod, live wire connection work completed.