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  2. Zinsco - Wikipedia

    en.wikipedia.org/wiki/Zinsco

    Zinsco would remain with copper in both their panels and breakers until the third major copper shortage in the early 1960s, when they would switch to an aluminum bus. In 1963, Zinsco introduced the R-38 twin breaker, which was the only twin circuit breaker that also made contact on both bus-bars for 240 volts in a single breaker space.

  3. Square D - Wikipedia

    en.wikipedia.org/wiki/Square_D

    Square D is an American manufacturer of electrical equipment headquartered in Andover, Massachusetts. Square D is a flagship brand of Schneider Electric , which acquired the company in 1991. The company was listed on the New York Stock Exchange for 55 years prior to its acquisition without reporting financial loss in any calendar quarter ...

  4. Earth-leakage circuit breaker - Wikipedia

    en.wikipedia.org/wiki/Earth-leakage_protection...

    An earth-leakage circuit breaker (ELCB) is a safety device used in electrical installations to prevent shock. It consists of either a current sensing mechanism, or a voltage sensing mechanism. Such a protection mechanism may be found in the form of distribution board modules, standalone devices, and special sockets (aka receptacles ).

  5. Federal Pacific Electric Corporation - Wikipedia

    en.wikipedia.org/wiki/Federal_Pacific_Electric...

    The company, in its earliest form as Federal Electric, a lighted sign company, was founded in 1901. It later made home and kitchen appliances, neon signs, police sirens, and circuit-breakers. Everything but circuit-breakers had been spun off or sold off to other companies by the 1940s, and the name was changed to Federal Pacific Electric.

  6. Brazen pigeon feeders turn NYC park into rat-infested hellhole

    www.aol.com/news/brazen-pigeon-feeders-turn-nyc...

    A geriatric woman and her associates are terrorizing Lower East Side locals by dumping dozens of pounds of birdseed in a tiny local park, turning the space into a putrid buffet for pigeons and rats.

  7. Circuit breaker - Wikipedia

    en.wikipedia.org/wiki/Circuit_breaker

    D 10–14 times I n: K 8–12 times I n. For the protection of loads that cause frequent short-duration (approximately 400 ms to 2 s) current peaks in normal operation Z 2–3 times I n for durations on the order of tens of seconds. For the protection of loads such as semiconductor devices or measuring circuits using current transformers.

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