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A residual-current device (RCD), residual-current circuit breaker (RCCB) or ground fault circuit interrupter (GFCI) [a] is an electrical safety device, more specifically a form of Earth-leakage circuit breaker, that interrupts an electrical circuit when the current passing through line and neutral conductors of a circuit is not equal (the term residual relating to the imbalance), therefore ...
Hearth—The floor of a fireplace. The part of a hearth which projects into a room may be called the front or outer hearth. [21] Hearthstone—A large stone or other materials used as the hearth material. Insert—The fireplace insert is a device inserted into an existing masonry or prefabricated wood fireplace. [22]
RCF is an Italian audio products manufacturer founded in 1949 in Reggio Emilia, [1] [2] Italy. The first products sold were microphones and electroacoustic transducers (loudspeakers). In the late ’60s, concert sound was going electric, and many loudspeaker pioneers were searching for high-powered devices to use in their designs.
Even a very efficient traditional fireplace only operates at about 15% efficiency. This is because most of the hot air generated by the fire travels up the chimney due to convection. A traditional fireplace can also draw hot air in from the room and expel it through the chimney, further lowering the efficiency. The design of the direct vent ...
A Franklin stove. The Franklin stove is a metal-lined fireplace named after Benjamin Franklin, who invented it in 1742. [1] It had a hollow baffle near the rear (to transfer more heat from the fire to a room's air) and relied on an "inverted siphon" to draw the fire's hot fumes around the baffle. [2]
3rd Natal Chart of The Rosicrucian Fellowship at Mount Ecclesia (1911). Mount Ecclesia was founded after Max Heindel, Founder of the Rosicrucian Fellowship (8/08/1909) reported to have conctact with an anonymous figure identified as one of the Elder Brothers of the Rose Cross known as "The Teacher",who instructed that a permanent headquarters be established to support the twin mission of the ...
Meyer Sound Laboratories is an American company based in Berkeley, California that manufactures self-powered loudspeakers, multichannel audio show control systems, electroacoustic architecture, and audio analysis tools for the professional sound reinforcement, fixed installation, and sound recording industries.
The Wedgewood stove was manufactured in Newark, California, originally by the James Graham Manufacturing Company and later as a division of Rheem.Gas ranges and stand-alone ovens marketed under the Wedgewood brand were particularly popular in the Western United States in the early and middle of the 20th Century.