Aluminum wiring issue. When electricity passes through electrical cables and connectors the wires expand and heat up. There was an overheating issue and overheating can mean fires. One of the issues with this type of wiring is that it. Wwwcpscgov wwwsaferproductsgov updated june 2011 original source.
While it might be tempting to believe that a home with aluminum wiring is safe because the wiring hasnt caused a problem for 30 or 40 years that is a dangerous misconception. Homes are believed to have solid aluminum branch circuit wiring. The main danger with this wiring is in the connections. These included flickering lights warm cover plates on switches and receptacles and burned insulation on wiring.
Aluminum wire itself is safe and a good conductor of electricity. Overloaded convenience circuits may exacerbate the issues associated with older solid aluminum wiring. About 2 million us. Today americans homes draw more electrical current through these aging circuits.
In fact mr. Problems with aluminum wiring are two fold and almost entirely related to the points of connection. This can result in overheated plugs and receptacles that may. Where wiring is visible such as in.
Problems with aluminum wiring. Solid aluminum wiring is a recognized fire and safety hazard. Completely rewiring your home isnt practical in most situationsit means tearing into walls and ceilings. They looked into it and found there were three other differences between copper and aluminum.
The average 3 bedroom home will. Aluminum is a much. Aluminum wiring for branch circuits became rare once again after about 1972 but many homes built with aluminum wiring remain and these electrical systems are showing their age. Aluminum wiring works the same way regular copper wiring works but there is a significant problem which has made aluminum a thing of the past when it comes to wiring homes for electricity.
Since the early 1970s wiring device binding terminals for use with aluminum wire have been marked coalr which stands for copperaluminum revised look for the word aluminum or the initials al on the plastic wire jacket. Aluminum wires are the color of aluminum and are easily discernible from copper and other metals. Aluminum building wiring is a type of electrical wiring for residential construction or houses that uses aluminum electrical conductors. Aluminum provides a better conductivity to weight ratio than copper and therefore is also used for wiring power grids including overhead power transmission lines and local power distribution lines as well as for power wiring of some airplanes.
Shortly after aluminum wiring became popular some problems started to appear. Aluminum electrical wiring information for your website. The owner of a home built between 1965 and 1972 should. But an electrician can make the connections safe by adding a short section of copper wire to the end of each aluminum wirethat way copper rather than aluminum will be connected to each switch outlet or other device.
Consumer product safety commission bethe3sda md website. Aluminum is generally thought to have a useful life of approximately 30 years.