wall switches and light fixtures in a building

current in a circuit preventing the conduction of electricity from one conductor to another.Wall switches are switches that are most commonly used in managing the light fixtures and permanent devices or equipment. Switches are connected using different methods such as three-way and four-way switches, grounded conductors and switches controlling light loads. The three-way and four-way connection method is simply used to create lights that operate using more than one switches; mostly done to change the states of light (Brain, 2009). Grounded conductors method is when the switch does not disconnect the grounded conductor of the circuit. The switches controlling light loads are supplied by a grounded general purpose circuit and are connected such that the circuit conductor is available at the switch location (NFPA, 2011). The wall switches have to be located in quickly accessible places, they have to be installed such that the highest position of the switch's center of the grip of the managing handle is never more than 2.0 m above the floor or the stand. In damp or wet locations, the switch has to enclosed in a weatherproof case or cabinet (NFPA, 2011). switches should not be installed inside tubs or shower places. The wall switches come in various shapes and designs, but they generally consist of a metal conducting plate and insulating plates to cover it. Wall switches are constructed of metal faceplates that is to be made out of ferrous metals not less than 0.76 mm in thickness or non ferrous metals not less than 1.02 mm in thickness, and the insulating face plates are made out of an insulating non combustible material not less than 2.54 mm in thickness (NFPA, 2011). The light fixtures of the place usually determines the location of the switch to help get the most efficient lighting for the place. For residential places, all the rooms light fixtures must be on a 15-amp circuit. A wall switch has to be placed near every room entry door and a receptacle has to be