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BSW/British standard junction metal electrical switch box
A small metal or plastic 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, under floors or concealed behind an access panel—particularly in domestic or commercial buildings. An appropriate type (such as that shown in the gallery) may be buried in the plaster of a wall (although full concealment is no longer allowed by modern codes and standards) or cast into concrete—with only the cover visible.
It sometimes includes built-in terminals for the joining of wires.
A similar, usually wall mounted, container used mainly to accommodate switches, sockets and the associated connecting wiring is called a pattress.
The term junction box may also be used for a larger item, such as a piece of street furniture. In the UK, such items are often called a cabinet. See Enclosure (electrical).
Junction boxes form an integral part of a circuit protection system where circuit integrity has to be provided, as for emergency lighting or emergency power lines, or the wiring between a nuclear reactor and a control room. In such an installation, the fireproofing around the incoming or outgoing cables must also be extended to cover the junction box to prevent short circuits inside the box during an accidental fire. -
Aluminum Junction Enclosure for Power Supply
Decoiler Coils width: ≤462mm; Material thickness 0.6mm; Material roll inner diameter: ≥φ450mm; Max.OD Coil: φ1200mm; Weight: ≤3T; Spindle center height: 650mm Land size (length x width) 1200x1000mm Traction and Leveling machine Number of work rolls: 11 rolls leveling It consists of a pinch roller and a leveling roller. The pinch roller can be adjusted individually. The feeding end of the leveling machine is equipped with a pair of guiding flat rollers and two pairs of guiding vertical rollers... -
54151-1/2&3/4 Outlet Box, Octagon, Drawn Construction, 4-Inch Diameter by 1-1/2-Inch Depth, Galvanized
American Standard/AMSI junction metal electrical switch box Feature： 1. This program is powered by NC servo feeder to feed, automatic stamping by the punch, the product is brought by the material launched, receiving frame receiving material. 2. Stamping method: continuous mold is used type, the punch does not stop, the feeder automatically follows the feed material. Automation can completely avoid workers uncertainty of operation Automatic line punch, manipulator by PLC control, high precis...