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External pattress boxes: power and data sockets. A pattress or pattress box or fitting box (in the United States and Canada, electrical wall switch box, electrical wall outlet box, electrical ceiling box, switch box, outlet box, electrical box, etc.) is the container for the space behind electrical fittings such as power outlet sockets, light switches, or fixed light fixtures.
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).
Bulkhead also refers to a moveable structure often found in an Olympic-size swimming pool, as a means to set the pool into a "double-ended short course" configuration, or long-course, depending on the type of event being run. Pool bulkheads are usually air-fillable, but power driven solutions do exist.
NEMA 1-15P (two-pole, no ground) and NEMA 5-15P (two-pole with ground pin) plugs are used on common domestic electrical equipment, and NEMA 5-15R is the standard 15-ampere electric receptacle (outlet) found in the United States, and under relevant national standards, in Canada (CSA C22.2 No. 42 [1]), Mexico (NMX-J-163-ANCE) and Japan (JIS C 8303).
The aft pressure bulkhead is the white circular component, and its web-like structure led a NASA technician with a sense of humor to add a large stuffed spider to the decor. The aft pressure bulkhead or rear pressure bulkhead is the rear component of the pressure seal in all aircraft that cruise in a tropopause zone in the Earth's atmosphere. [ 1 ]
A lunar eclipse above Lofer, Austrian province of Salzburg, in the early hours of Monday, Sept. 28, 2015. (AP Photo/Kerstin Joensson)
A report in the Wall Street Journal from September 2023 found Chinese intruders attempted to breach military facilities over 100 times in recent years, including sneaking onto a missile range in ...
Dual 3-pin socket-outlet construction Switched dual 3-pin socket-outlet Socket-outlet, using insulation displacement as a means of connecting to low voltage (230 V) supply conductors AS/NZS 3112 compliant plugs have two flat pins forming an inverted V-shape plus a vertical earthing pin.