After making the connecting pipe, wrap it with yellow ribbon, the overlap width is half of the bandwidth, and the wrapping length should exceed the stripping cut by 150-200mm, and the number of layers depends on the voltage level. Then wrap the outer layer with J-20 self-adhesive tape, and the overlap width is half of the bandwidth. The length should be at least 100-150mm longer than the yellow ribbon, and the number of layers should not be less than 6.

After the three phases are completed. Arrange them into circles, then wrap them into circles with self-adhesive tape as described above, and finally wrap them with plastic anti-abrasion tapes, the overlap width is half of the bandwidth, and the overlap width is half the bandwidth. The length should be at least 150mm longer than the self-adhesive tape, and the number of layers should not be less than 3.

2. Waterproof treatment steps for intermediate joints of low-voltage cables:

1) After the terminal is crimped, wrap the waterproof filler around the terminal. Shrink heat shrink tubing.

2) If it is a generally slightly humid environment, wrap the waterproof filling tape on both ends of the cable, and shrink the sheath (the two ends of the sheath must be glued).

3) If the environment is relatively harsh, you must use self-adhesive waterproof tape to strengthen waterproofing (heat-shrinkable waterproof tape can also be used, we generally use self-adhesive tape, and heat-shrinkable tape is used for cable damage repair). the way is:

A. After filling the waterproof filler, wrap one layer of self-adhesive waterproof tape on the outer layer of the filler or stretch the self-adhesive waterproof tape to wrap multiple layers, but the thickness should not be too thick, so as not to be too large, so that the insulating tube cannot be inserted.

B. Put the heat shrinkable tube on the glue and shrink it well.

C. Wrap waterproof tape at both ends of the heat shrinkable tube, then wrap a layer of self-adhesive waterproof tape, wrap waterproof tape and self-adhesive tape at both ends of the cable insulation sheath, and then heat the sheath to shrink it.