Electrical wiring is an electrical installation of cabling and associated devices such as switches, distribution boards, sockets, and light fittings in a structure. Wiring is subject to safety standards for design and installation. Allowable wire and cable types and sizes are specified according to the circuit operating voltage and electric current capability, with further restrictions on the environmental …
Understanding electrical wiring Since the 1940s, any house built (or any older home that has been rewired) has had to follow an electrical code the NEC—written with safety in mind. NEC code identifies types of electrical wires and electrical cable types by color.
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