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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].
Below is a list of NEMA enclosure types; these types are further defined in NEMA 250- Enclosures for Electrical Equipment. Each type specifies characteristics of an enclosure, but not, for example, a specific enclosure size. Note that higher numbers do not include the lower-numbered tests. For example, types 3, 4 and 6 are intended for outdoor ...
Enclosures can be pressurized with clean air or inert gas, displacing any hazardous substance. Arc-producing elements can be isolated from the atmosphere, by encapsulation in resin, immersion in oil, or similar. Heat-producing elements can be designed to limit their maximum temperature below the autoignition temperature of the material involved.
In building safety and construction, a smokeproof enclosure is a type of exit stairwell that has been designed to keep out smoke (and other combustion products) in the event of a fire, so that building occupants may more safely exit the building.
A positive pressure enclosure, also known as a welding habitat or hot work habitat, is a chamber used to provide a safe working environment for performing hot work in the presence of explosive gases or vapors. They are commonly used in welding environments and are associated with the offshore oil industry. [1]
A loudspeaker enclosure or loudspeaker cabinet is an enclosure (often rectangular box-shaped) in which speaker drivers (e.g., loudspeakers and tweeters) and associated electronic hardware, such as crossover circuits and, in some cases, power amplifiers, are mounted.
Constructed of aluminum extrusions, special galvanized steel tubing, or even just lengths of steel or PVC water pipe, construction costs were greatly reduced. This resulted in many more greenhouses being constructed on smaller farms and garden centers.
Borobudur, also transcribed Barabudur (Indonesian: Candi Borobudur, Javanese: ꦕꦤ꧀ꦝꦶꦧꦫꦧꦸꦝꦸꦂ, romanized: Candhi Barabudhur), is a 9th-century Mahayana Buddhist temple in Magelang Regency, near the city of Magelang and the town of Muntilan, in Central Java, Indonesia.