Excellent plumber installation standards: pipe thread depth moderate and free of burrs

1. Wiring principles: horizontal and vertical. Use dedicated PVC flame-retardant electrical conduit; the conduit must be secured in the chase; when the junction box connects to the conduit, a locknut must be used; use one pipe clamp every 80 cm on straight runs, and one pipe clamp every 20 cm at corners.

2. For outlets on the upper part of the wall, cut the chase vertically upward on the wall surface, up to the installation line for the decorative cornice at the top of the wall. If on the lower part of the wall, cut the chase vertically downward to the bottom of the baseboard installation. The chase depth should be consistent; for the chase line and top straightness, first snap a control line on the wall, then cut the wall surface with a cutting machine, and use a machine to cut the chase.

3. Use PVC conduit; when bending the pipe, bend it on the spot with a spring. Do not use 90-degree elbows or tees. When installing the wiring, a protective conduit sleeve must be added, and adhesive bonding must be used for connections. The sleeve joints should be tight, straight, and smooth. At right-angle corners, cut open the inner side of the corner, cut a curved arc-shaped joint on one side of the cut, and then bend and install.

4. Pipe thread depth moderate, free of burrs. Wrap the pipe connection with 5-6 turns of raw material tape; the pipe thread count is 5-6 threads, until the joint is tightened. Do not allow damaged threads to be connected into the pipe.