In this paper, author gives some depiction of the design of Baogang science and information center building, discuss some questions in the application of pre-made branch cable and gives out solution for those questions.

Performance,advantages and installation of branch cable;

Discussion on the application of insulating puncture wire holder in the electric cable branching;

Effects of the blends of a metal oxide solid solution together with ATH on flame retardancy, smoke suppression, physical and mechanical properties, processability, thermal stability and evolution of HCI of PVC for ready-made branch cable are studied.

Brings the checking principles of ready-made branch cable ,expecting to get better comprehensive economical value.

Combined with application of pre-casting branch cable for general gymnasium in Longyan,it compares reliability、economy and superiority of adjustment process of pre-casting branch cable and cable T branch、plug-board bus bar in 220/380 V low-voltage distribution wiring system,and indicates feasibility of application for construction engineering.