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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.
The 1965 edition of the NEC, article 384-15 was the first reference to the circuit total limitation of panelboards. [1] As of 2008, the location of this language is at Article 408.54 now titled "Maximum Number of Overcurrent Devices." Non-CTL panels have not been made by reputable manufacturers since 1965.
In 1911, General Electric was found to have acquired three quarters of the National Electric Light Association, an association of lighting product companies through which GE had licensed its patented products; this trading arrangement was the subject of an antitrust investigation, and as a result the association was dissolved.
Aftermarket replacements for the Zinsco breakers are available; however, it may be more cost effective simply to replace the entire panel with a more modern and safer design from another manufacturer (such as Eaton, General Electric, Siemens, or Square D), depending on the number of breakers to be replaced. If the bus bar shows signs of ...
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, paying out 220 consecutive quarterly dividends to shareholders.
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