Multiple Street Lighting Systems

Theory of Operation Identify the two basic electrical circuit configurations for street lighting systems and describe the operation of each. Identify the basic components of a typical multiple street lighting system and describe the function of each. Lamps Describe the characteristics of an incandescent lamp and explain how it operates. Identify common types of gaseous discharge lamps and describe how each operates. Ballast Transformations State the function of a ballast transformer and describe its principle of operation. Using wiring diagrams explain how a ballast transformer may be connected to a multiple street lighting circuit. State the function of a self-contained luminaire and describe two general types of luminaires. Control Devices Describe the operation of a basic relay. Identify two types of photocells and explain how each type operates in a multiple street lighting system. Describe one way in which a street lighting system may be controlled from the primary side of a distribution transformer. Circuit Layout Using a wiring diagram describe how the components of a multiple street lighting system can be connected. Given a circuit or circuits on a wiring diagram identify the source path load and control. Troubleshooting Multiple Street Lighting Circuits Describe general steps that can be used to troubleshoot problems in multiple street lighting circuits.