Wiring Systems and Fault Finding for Installation Electricians

Part 1 Diagrams: BS 3939 symbols; diagrams; circuit convention; constructing and interpreting circuit diagrams; relay logic; programmable logic controllers; drawing exercises. Part 2 Wiring systems: radial systems; ring circuits; distribution systems; emergency lighting systems; security and fire alarm systems; call systems; motor starter circuits; central heating systems; extra low voltage lighting. Part 3 Testing and test instruments: measurement of electrical quantities; selection of test instruments; approved test lamps and indicators; accidental RCD operation; calibration zeroing and care of instruments; continuity of ring final conductors; continuity of protective conductors; earth electrode resistance; insulation resistance; polarity; earth fault loop impedance; operation of RCD; prospective short circuit current. Part 4 Fault finding: signs and symptoms; ring and radial socket outlet circuits; radial circuits feeding fixed equipment; cable fault location; emergency lighting; security and fire alarm systems; call systems; central heating systems; motor starter circuits; conclusion - and a cautionary tale.