Search results
Results from the WOW.Com Content Network
A set of wiring diagrams may be required by the electrical inspection authority to approve connection of the residence to the public electrical supply system. Wiring diagrams will also include panel schedules for circuit breaker panelboards, and riser diagrams for special services such as fire alarm or closed-circuit television or other special ...
The kit achieves the same function by adding an external interlock onto an existing breaker panel that allows the main breaker to be turned on or one designated load breaker to be turned on, but not both at the same time. The interlocked load breaker is repurposed as the "backfeed" breaker, and a generator is connected to it (wired directly or ...
A simplified diagram of a two-phase alternator [1]. Two-phase electrical power was an early 20th-century polyphase alternating current electric power distribution system. Two circuits were used, with voltage phases differing by one-quarter of a cycle, 90°.
Each phase of the circuit is run in a separate grounded metal enclosure. The only fault possible is a phase-to-ground fault, since the enclosures are separated. This type of bus can be rated up to 50,000 amperes and up to hundreds of kilovolts (during normal service, not just for faults), but is not used for building wiring in the conventional ...
The flatcar has an extra set of flangless wheels on each of its trucks to handle this heavy locomotive. Foley Brothers 110-1 working in the coal mine in Colstrip, Montana . The only surviving GE boxcab is the 100-ton unit built in December 1929 and delivered to the contractor Foley Brothers in January 1930.
Discover the best free online games at AOL.com - Play board, card, casino, puzzle and many more online games while chatting with others in real-time.
The first GE Locomotive was a series of four-axle boxcab gasoline–electric machines closely related to the "doodlebugs", self-propelled passenger cars built in the early Twentieth Century. One of their first major customers was the Minneapolis, St. Paul, Rochester & Dubuque Electric Traction Company , better known as the Dan Patch Electric ...
Selectivity, also known as circuit breaker discrimination, is the coordination of overcurrent protection devices so that a fault in the installation is cleared by the protection device located immediately upstream of the fault. The purpose of selectivity is to minimize the impact of a failure on the network.