Series and Street Lighting

Circuits and Supply Explain the operation of a series circuit and describe the relationship between current and voltage in the circuit. Explain the function and operation of a constant current transformer. Control Devices State the function of a control device in a circuit. Identify and describe some of the controls typically used to regulate series street lighting circuits. Series Systems Part 1 Describe the operation of an incandescent lamp. Explain what a high-voltage head is and how it functions. Explain how incandescent lamps may be connected to a series street lighting circuit. Series Systems Part 2 Explain the function of an isolating transformer in a series street lighting system. Identify the parts of a mercury vapor lamp and explain its operation. Using a schematic drawing describe how series street lighting components may be connected using isolating transformers. Maintenance and Troubleshooting Part 1 Describe a general procedure for relamping a fixture in a series street lighting circuit. Describe a general procedure for replacing a faulty ILH transformer in a series street lighting circuit. Maintenance and Troubleshooting Part 2 Identify and explain the basic steps used to troubleshoot a street lighting problem. Define the term sectionalize and explain how sectionalizing is used to troubleshoot street lighting circuits.