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Home wiring
Homes typically have several kinds of home wiring for lighting and power distribution, permanently installed and portable appliances, telephone, heating or ventilation system control, and increasingly for home theatre and computer networks. Regulations for wiring installation vary widely around the world, with national, regional, and municipal rules sometimes in effect. Some places allow the homeowner to install some or all of the wiring in a home; other jurisdictions require that licensed electricians only install wiring.
==History==
Home wiring started when electric lights and telephone were first installed in homes towards the end of the 19th century. By the end of the 20th century an increased variety of systems were available for installation in homes. Electrical service is considered essential in modern homes, but most new homes will also have provision for telephone, Internet access, security, and television systems and others.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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