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First-generation wiring systems became susceptible to abuse by homeowners who would replace blown fuses with fuses rated for higher current. This overfusing of the circuits subjects wiring to higher levels of current and risks heat damage or fire. Knob-and-tube wiring may also be damaged by building renovations. [11]
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GE used the small size of their system as the primary selling feature. The original 28 pound set used an 11" tube and sold for $249, which was very inexpensive for a color set at that time. Introduced in 1966, the Porta-Color was extremely successful and led to a rush by other companies to introduce similar systems.
The General Electric Building is sometimes known by its address to avoid confusion with 30 Rockefeller Plaza, which was once known as the GE Building. 570 Lexington Avenue contains a 50-floor, 640-foot-tall (200 m) stylized Gothic octagonal brick tower, with elaborate Art Deco decorations of lightning bolts showing the power of electricity.
A peg has a grip or knob on it to allow it to be turned. A tuning pin is a tuning peg with a detachable grip, called a tuning lever. The socket on the tuning lever fits over the pin and allows it to be turned. Tuning pins are used on instruments where there is no space for a knob on each string, such as pianos and harps.