Home wiring – Wikipedia, the free encyclopedia

A modern Western home will 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. [1] 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.

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.

In new home construction, wiring for all electrical services can be easily installed before the walls are finished. In existing buildings, installation of a new system such as a security system, or home theatre, may require additional effort to install concealed wiring. Multiple unit dwellings such as condominiums and apartment houses may have additional installation complexity in distributing services within a building.

The elements that make up home wiring are:

Electrical services often require connections to an outdoor distribution network for power, telephone, Internet, and television.

All of the above services require entrance into the home and usually a location for connection equipment. For electric power supply, a cable is run either overhead or underground into a switch board in the home. A switch board is typically a metal box mounted on a wall of the home. In many new homes the location of the electrical switchboard is on the outside of the external wall of the garage.

How services are connected will vary depending on the service provider and location of the home.

Power points (receptacles) need to be installed throughout the house in locations where power will be required. In many areas the installation must be done in compliance with standards and by a licensed or qualified electrician. Power points are typically located where there will be an appliance installed such as, telephone, computers, television, home theater, security system, CCTV system.

The number of light fitting does depend on the type of light fitting and the lighting requirements in each room. The incandescent bulb made household lighting practical, but modern homes use a wide variety of light sources to provide desired light levels with higher energy efficiency than incandescent lamps. A lighting designer can provide specific recommendations for lighting in a home. Layout of lighting in the home must consider control of lighting since this affects the wiring. For example multiway switching is useful for corridors and stairwells so that a light can be turned on and off from two locations. Outdoor yard lighting, and lighting for outbuildings such as garages may use switches inside the home.

Telephone wiring is required between the telephone company's service entrance and locations throughout the home. Often a home will have telephone outlets in the kitchen, study, living room or bedrooms for convenience. Telephone company regulations may limit the total number of telephones that can be in use at one time. The telephone cabling typically uses two pair twisted cable terminated onto a telephone plug. The cabling is typically installed as a daisy chain starting from the point where the telephone company connects to the home or outlets may each be wired back to the entrance.

See original here:
Home wiring - Wikipedia, the free encyclopedia