There are many kinds of indoor cable heads, including indoor dry-clad type, heat-shrinkable type, paper insulated castable type and so on.
But the general low-voltage distribution engineering is used in the dry package and heat shrinkable type.
Dry package type: the material is only made of high pressure tape, phase color tape, plastic tape, terminal and so on. It is directly wound manually, and there is no additional protection on the cable core wire.
Heat shrinkable terminal head: plastic gloves, plastic heat shrinkable tube, phase color tube, terminal and so on, are heat shrinkable with alcohol blowtorch, first shrinkable tube, then shrinkable sleeve, phase color tube, pressure terminal.
Different from the dry bag type, the protection grade of heat shrinkable mode is relatively high, the core wire has a layer of plastic pipe protection, relatively speaking, it is also relatively beautiful, of course, the price is much higher, 70 square meters of gloves is about dozens of yuan.
The construction organization design is compiled after entering the site. Party A and the design shall do as required if they have requirements on the cable head. If they have no requirements, they can choose their own methods.
In fact, there is no pre-branch cable head. Pre-branch cable is finished product, processed by the manufacturer according to the layer height and the length of the branch. It can be directly hoisting when it arrives at the site.
The baotou at the cable branch is not processed on site and cannot be processed on site.
The second floor is wrong, so can only use T terminal box or puncture line clamp branch.
Dry wrapped cable ends are generally used in low-voltage cable ends. Dry wrapped cable ends are wrapped with insulating plastic tape.
Casting type cable head is generally used in high voltage cable head. It is a casting type cable head formed by purchasing complete sets of finished product molds, installing and placing them in place and pouring insulating glue.
Heat shrinkable cable head is generally used in high and low voltage cable head. It is a cable head formed by purchasing finished heat shrinkable tubes and heat shrinkable sleeve, gradually installing and positioning step by step with a blowtorch to bake heat shrinkable tubes and heat shrinkable sleeve, heat shrinkable tubes and heat shrinkable sleeve when it is hot.