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3-phase transfer switch single-line diagram Intelligent transfer switch. A transfer switch is an electrical switch that switches a load between two sources. Some transfer switches are manual, in that an operator effects the transfer by throwing a switch, while others are automatic and trigger when they sense one of the sources has lost or gained power.
An expansion of the 400 Bad Request response code, used when a client certificate is required but not provided. 497 HTTP Request Sent to HTTPS Port. An expansion of the 400 Bad Request response code, used when the client has made a HTTP request to a port listening for HTTPS requests. 499 Client Closed Request.
Nature's Way began as six comic strips submitted in 1976 to the Pacific Search, a local magazine in Seattle. This was Larson's effort to get away from a retail music store job. He was paid $90 for the strips, which encouraged him to produce more cartoons. He soon began submitting weekly cartoons to a newspaper, The Sumner News-Review, which ...
September 25, 2024 at 5:00 AM. Westend61/Getty Images/File. Major cell phone carriers have started to adopt a new technology that helps direct callers to the 988 suicide and crisis hotline to help ...
Riboswitch. In molecular biology, a riboswitch is a regulatory segment of a messenger RNA molecule that binds a small molecule, resulting in a change in production of the proteins encoded by the mRNA. [1][2][3][4] Thus, an mRNA that contains a riboswitch is directly involved in regulating its own activity, in response to the concentrations of ...
Senior VP, Campaigns. Dan Mathews [ 1 ] Revenue. US$66.3 million (2020) [ 2 ] Website. www.peta.org. People for the Ethical Treatment of Animals (PETA; / ˈpiːtə /) is an American animal rights nonprofit organization based in Norfolk, Virginia, and led by Ingrid Newkirk, its international president. Founded in March 1980 by Newkirk and animal ...
Switch used to shut off petrol pumps at a petrol station in the event of a fire. A fireman's switch is a specialized switch that allows firefighters to quickly disconnect power from high voltage devices that may pose a danger in the event of an emergency. [1] According to the Institution of Electrical Engineers, any electrical device operating ...
President Reagan and Nancy Reagan in 1987—the military aide at right-center is carrying the nuclear football. The nuclear football (also known as the atomic football, the Presidential Emergency Satchel, [1] the satchel, the button, the Black Bag, the black box, or just the football) is a briefcase, the contents of which are to be used by the president of the United States to communicate and ...