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  2. Electrical wiring in North America - Wikipedia

    en.wikipedia.org/wiki/Electrical_wiring_in_North...

    Arc-Fault Circuit Interrupter (AFCI) protection is required to protect nearly all finished areas of a home with the exception of bathrooms. This device, which can be a circuit breaker or the first outlet on a circuit, is designed to detect hazardous electrical arcing in the branch circuit wiring as well as in cords and plugs.

  3. Missouri State Teachers Association - Wikipedia

    en.wikipedia.org/wiki/Missouri_State_Teachers...

    Missouri State Teacher Association (MSTA) is a state teachers association that serves more than 46,000 educators in the U.S. state of Missouri and is dedicated to educating the state's children. The headquarters is located in Columbia, Missouri in the Missouri State Teachers Association Building , which is on the National Register of Historic ...

  4. Circuit breaker - Wikipedia

    en.wikipedia.org/wiki/Circuit_breaker

    An early form of circuit breaker was described by Thomas Edison in an 1879 patent application, although his commercial power distribution system used fuses. [2] Its purpose was to protect lighting circuit wiring from accidental short circuits and overloads.

  5. Isolated-phase bus - Wikipedia

    en.wikipedia.org/wiki/Isolated-phase_bus

    The consequences of a two- or three-phase fault between the generator and the first circuit breaker are therefore much more serious and often result in severe damage to the busbars and nearby equipment. Isolated-phase bus is made in ratings from 3000 amperes to 45,000 amperes, and rated for voltages from 5000 volts up to about 35,000 volts.

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  7. Survey: 70% of Missouri teachers think about leaving the ...

    www.aol.com/survey-70-missouri-teachers-think...

    The main reasons Missouri teachers think about quitting are stress, student behavior and low pay, according to a new survey by the MSTA.

  8. Springfield MSTA teachers union endorses 3 in SPS board race ...

    www.aol.com/springfield-msta-teachers-union...

    The Springfield MSTA, a teachers union, asked members to vote on the three candidates it will back in the April 2 school board election. Springfield MSTA teachers union endorses 3 in SPS board ...

  9. Distribution board - Wikipedia

    en.wikipedia.org/wiki/Distribution_board

    A distribution board (also known as panelboard, circuit breaker panel, breaker panel, electric panel, fuse box or DB box) is a component of an electricity supply system that divides an electrical power feed into subsidiary circuits while providing a protective fuse or circuit breaker for each circuit in a common enclosure.

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