Hazards in the home
Cables in contact with something hot or wet
Water near sockets
Shoving things into sockets
Too manu plugs in one socket
Appliances without covers on
Lighting sockets without the bulb in
Most cables have 3 seperate wires.
Most electrical appliances are connected to the mains through a three - core cables.
This means they have three wires inside them, each with a core of copper and a coloured plastic coating.
The brown wire is the live wire and in a mains supply alternates between a high +VE and -VE voltage
The blue wire is the neutral wire and is always at OV.
The green and yellow earth wire is for protecting the wiring and for saftey. It carries electricity to the earth.
Three-pin plugs and cables.
The wires are connected to the correct pin and firmly screwed in.
A cable grip is tightly fastened over the cables outer layer.
Thicker cables are used for appliances who have a higher current as they have less resistance so they can carry more current.
The metal parts in a plug are made of copper because they are good conductors.
The case, cable grip and cable insulation are made of rubber or plastic because they're good insulators and are flexible.