100 Days Of Article 100 Raceway Youtube This videos covers the definitions of "raceway" and "communications raceway," and shows an interesting new type of emt. This channel focuses on electrical safety, mainly the nfpa 70 national electrical code (nec) and nfpa 70e, the standard for electrical safety in the workplace.
100 Days Of Article 100 Branch Circuit Youtube All 800 definitions are now in article 100. this video tells you why, and more importantly, how they apply in the nec. Aug. 1, 2011. the national electrical code is published by the national fire protection association (nfpa) with revisions on a three year schedule. the 2011 nec, which replaces the 2008 nec, was released by nfpa in august 2010. there were many changes of interest to manufacturers, installers and users of communications cable and connectivity. A new definition was added to article 100 to establish what constitutes such an installation. the additional criteria includes an industrial process load or manufacturing process load of at least 2,500 kilovolt amperes. the facility must have at least one service that operates at more than 150v to ground and more than 300v phase to phase. The art. 100 definition of raceway indicates that it is an enclosed channel designed expressly for holding wires, cables, or busbars. when viewing the types of raceways included in this definition, it can be broadly divided into circular raceways and non circular raceways, such as wireways.
100 Days Of Article 100 Building And Structure Youtube A new definition was added to article 100 to establish what constitutes such an installation. the additional criteria includes an industrial process load or manufacturing process load of at least 2,500 kilovolt amperes. the facility must have at least one service that operates at more than 150v to ground and more than 300v phase to phase. The art. 100 definition of raceway indicates that it is an enclosed channel designed expressly for holding wires, cables, or busbars. when viewing the types of raceways included in this definition, it can be broadly divided into circular raceways and non circular raceways, such as wireways. Operation at a substantially constant load for an indefinitely long time. duty, intermittent. operation for alternate intervals of (1) load and no load; or (2) load and rest; or (3) load, no load, and rest. duty, periodic. intermittent operation in which the load conditions are regularly recurrent. duty, short time. Chapter 3 of the national electrical code (nec) contains a series of articles (342 376) that provide raceway requirements. the nec defines a raceway as: “an enclosed channel designed expressly for holding wires, cables, or bus bars, with additional functions as permitted in this code [art. 100].” common rules.
100 Days Of Article 100 Continuous Load Youtube Operation at a substantially constant load for an indefinitely long time. duty, intermittent. operation for alternate intervals of (1) load and no load; or (2) load and rest; or (3) load, no load, and rest. duty, periodic. intermittent operation in which the load conditions are regularly recurrent. duty, short time. Chapter 3 of the national electrical code (nec) contains a series of articles (342 376) that provide raceway requirements. the nec defines a raceway as: “an enclosed channel designed expressly for holding wires, cables, or bus bars, with additional functions as permitted in this code [art. 100].” common rules.
100 Days Of Article 100 In Sight From Within Sight Youtube
Comments are closed.