Insulating electrical pipe system

Scope:     Electrical conduit provides very good protection to enclosed conductors from impact, moisture, and chemical vapors. Varying numbers, sizes, and types of conductors can be pulled into a conduit, which simplifies design and construction compared to multiple runs of cables or the expense of customized composite cable. Wiring systems in buildings may be subject to frequent alterations. Frequent wiring changes are made simpler and safer through the use of electrical conduit, as existing conductors can be withdrawn and new conductors installed, with little disruption along the path of the conduit.

Specification:     This Standard specifies general requirements for both metallic and non-metallic conduits and fittings used to protect cables in electrical installations. Mechanical properties, electrical characteristics and material requirements are covered.