CGLI 2330 Certificate in Electrotechnical Technology Level 2 Installation Technology: Unit 205 – Installation (Buildings & Structures)
Unit 03 – Function Of Components
Function of Components Unit Aims By the end of the unit participants should be able to:
State the function of components in electrotechnical systems a) Lighting i) Switches ii) Lamps iii) terminals and connections b) power and heating i) ring and radial circuits and sockets ii) cooking and water heating circuits iii) motors iv) industrial installations v) controls - thermostats, timers, meters, switch gear, detectors c) security systems i) relays ii) detectors iii) controls iv) maintained and non maintained systems d) data/communication systems i) cables and components (Syllabus Reference: 4.3.07)
Function of Components As discussed earlier, circuits are made up of a number of components the type of which depend on the type of circuit being dealt with. In this section we will look at the various types of components commonly encountered.
Lighting Circuits Switches Switches are used in lighting circuits to control the light sources and there are basically three types as follows:
For more information see pages 125 to 132 of „Electrical Installations Level 2 2330 Technical th Certificate‟ - revised for the 17 Edition IEE Wiring Regulations (ISBN 978 0 435401 09 2).
The College at Clacton
Unit 03 Page 1
August 2011