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A small metal, plastic or fiberglass junction box may form part of an electrical conduit or thermoplastic-sheathed cable (TPS) wiring system in a building. If designed for surface mounting, it is used mostly in ceilings, concrete or concealed behind an access panel—particularly in domestic or commercial buildings [2].
Concrete trenching - a trench is dug into the building's concrete. Cabling and floor boxes are installed and the trench is sealed with concrete. Floor decking - cables are installed on the ceiling of the floor below. Holes are drilled through the floor and outlets are installed on top of the floor.
A wire harness must also be manufactured with a terminal, defined as "a device designed to terminate a conductor that is to be affixed to a post, stud, chassis, another tongue, etc., to establish an electrical connection." [7] Some types of terminals include ring, tongue, spade, flag, hook, blade, quick-connect, offset and flagged. [8]
An electrical wiring interconnect system (EWIS) is the wiring system and components (such as bundle clamps, wire splices, etc.) for a complex system. The term originated in the aviation industry but was originally designated as Electrical Interconnection Systems (EIS). [ 1 ]
Some types of conduit are approved for direct encasement in concrete. This is commonly used in commercial buildings to allow electrical and communication outlets to be installed in the middle of large open areas. For example, retail display cases and open-office areas use floor-mounted conduit boxes to connect power and communications cables.
Cellular floor raceways are electrical wiring ducts or cells made from steel floor deck that serve as structural formwork for placement of concrete floor slabs and also as wire and cable raceways within the concrete floor slab. These raceway systems are generally used to create floor slabs on multi-story steel-framed buildings but can also be ...
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