2 ELECTRICAL SYSTEMS ELECTRICAL SYSTEMS Parts of the electrical system A includes the , an or a modern (also called ), , , , , and, of course, and lights. Each room in the house needs a certain number of light points. According to recent legislation, it is necessary to replace the old incandescent with or LED ones. Other electrical systems in a house may include wiring for , such as cable television, home theatre and audio systems and wiring for , such as telephones and the internet, security systems, and in the most recent houses, also wiring for systems. home electrical system incoming power lines electric meter digital meter smart meter service panels wiring electrical boxes switches and sockets appliances bulbs low-power 1 home entertainment home communications home automation 1 How the electrical system works Electricity arrives at your house from your local by a power line or underground through a conduit. Generally, an electric meter, monitored by your electric utility company, is where the electricity enters your house. Electricity runs through the giving power to lights and appliances. An additional ' ' can be attached to sockets and other electrical devices and also securely connected to the ground. The purpose of the grounding wire is to electricity from a short-circuit into the earth, preventing electric shock. utility company mounted conductor wires grounding wire divert WARM UP Match the country to its right voltage. Surf the net to get information. The UK ( ) a. 240 Australia ( ) b. 110 Canada ( ) c. 220 The USA ( ) d.120 Italy ( ) e. 230 MORE LED stands for Light Emitting Diode. 1 DO Do you have any electrical appliances at home which can be connected to the Internet? Write a list and compare it with that of your classmates. 1 measures Safety They are required to protect the inhabitants of the building. They include to prevent fires by electricity, in areas, such as kitchens and bathrooms, and to alert occupants of a fire or gas , and to protect the house from potential intrusions. Electrical systems are regulated by international and local building codes. The installation must be checked when the home is finished to ensure all codes have been followed and the electrical system is safe for the people that will live in it. circuit breakers cutting off ground-fault circuit interrupters (GFCI) high-moisture smoke alarms gas detectors fallout security systems Close-up of electrical fusebox