#National electrical codebook code

There isn’t enough power to constitute a shock hazard, and in the event of a parallel line-to-line fault, there is not enough arcing energy to ignite combustible material. Even runs of unshielded twisted pairs (UTP) used for low-power Ethernet circuits fall under NEC jurisdiction. One might think the NEC would not cover wiring operating below some minimum voltage, but this is not the case. The implication is that other underground wiring such as lighting in underground traffic tunnels is covered. The NEC declines to get involved in some other areas also. But utility wiring installed in office space, an equipment maintenance garage, and similar areas not directly part of the generation and distribution system must comply. In the U.S., the NEC doesn’t cover utility wiring where it is part of the electrical generation and distribution system. Their purpose, as in other parts of the world, is to promote electrical safety in the home and in the workplace. In China there is a highly rational body of electrical standards, some mandatory and some voluntary. Australia and New Zealand share the Standard for Wiring Rules.

#National electrical codebook code

Canada has the Canadian Electrical Code (CEC), and in large areas of Europe and elsewhere, the International Electrotechnical Commission (IEC) administers an electrical code. Outside the U.S., several countries including Mexico and Venezuela have incorporated the NEC into their laws. In the U.S., these entities are mostly individual states, although some states such as New York and Illinois delegate this function to municipalities or to counties.Ī revised edition of the NEC is published every three years, with many changes. It is managed by the National Fire Protection Association (NFPA) for the benefit of jurisdictions that wish to enact it into law. The National Electrical Code (NEC) on its own has no legal status.