Paper Title
The Design of Branch Circuits for Lighting in Buildings

This article presents the design of branch circuits for lighting in buildings based on the Thai Electrical Code 2013, prepared by The Engineering Institute of Thailand under H.M. the King's Patronage or EIT. The design of branch circuits is design for the size and installation of wires between the overcurrent protection devices on panel board and load or appliances. The branch circuit design is important for electrical installations. Because of the need to keep the power system stable, safe, convenient and reduce maintenance costs, it is imperative that the designer. Contractors and persons involved in the installation of lighting systems must have knowledge and understanding about the installation of the branch circuit for lighting in the building. Keywords - Thai Electrical Code 2013, Branch Circuits Design.