1.1 ELECTRICAL SERVICES
CONVENTIONAL SYMBOLS FOR ELECTRICAL
INSTALLATIONS – MAIN – SUB MAIN –WIRING
ACCESSORIES – WIRE, CABLE, SWITCHES, WALL PLUGS,
FUSES AND CUTOUTS – H.R.C TYPE, ROUND TYPE,
CARTRIDGE TYPE – DISTRIBUTION BOXES, CIRCUIT
BREAKER, JUNCTION BOXES – 2PIN AND 3PIN SOCKETS,
LAMP HOLDER, CEILING ROSES, OVER SWITCHES–
VARIOUS SYSTEM SOFWIRING – WOODEN CASING
WIRING, CLEAT WIRING , CTS WIRING, CONDUIT WIRING –
INSULATION – EARTHING – ELECTRICAL METERS – USE
OF GENERATORS, INVERTERS,
EMERGENCY LAMPS.
1.2 ELECTRICAL LAYOUT
PLANNING OF ELECTRICAL INSTALLATION SAND
DISTRIBUTION– PREPARATION OF ELECTRICAL LAYOUT
FOR A SMALL RESIDENCE, SMALL WORKSHOP,
SHOWROOM, SCHOOL BUILDING ETC – ESTIMATION OF
LOAD.