Electrical wiring is a method to carry electricity from one place to another.

There are strict safety codes for wiring electrical devices. Overall saferty rules will be discussed in section ‘Electrical Safety’.

Wiring materials depend on rating of the circuit, type of the building (office, flat, terraced house etc.), type of electrical system and so on. Simple scemes and low powers are used in homes. In commercial buildings larger devices can be used but it is extremely important to inspect the heat or moisture conditions in the building. Heavy industries have more strict requirements for wiring.

First electrical wiring methods used in history were extremely flammable and dangerous. Nowadays there are so many rules which define correct wiring that when correctly installed and regularly inspected, there is no danger of fire or electric shock.

Aluminium conductors have been popular in history and are still used because of their low cost (cheaper than copper wiring).

Modern materials used are nonmetallic sheated cables, signal cables are made with teflon or other materials that does not produce a lot of smoke or toxic fumes. There is also a form of high-temperature cable is mineral insulated cable, which is used in high temperature environments (it is fireproof and usable until 200 °C).