wiring design
4.This disquisition studied the engineer design of the structured cabling system and the drawing software------Microsoft Visio,as well as the auxiliary design and the administration of the Premise Wiring System based on Microsoft Visio,and introduced the development of the auxiliary design and the administrative system of the Premise Wiring System.
8.With a briefly introduction of the problems existing in the low voltage distribution system of Guangzhou Metro Line 1, such as indirection wiring, interference of combined piping and wiring, confused standard classification of load level, decentralization of low load power supply, inflexible control mode, etc., the author argues that in the new design of low voltage distribution a great attention shall be paid to the above mentioned problems and a careful comparison between the old solution and the new one shall be made.

