In addition to the cable Articles, Chapter 3 of the NEC contains a sequence of Articles pertaining to raceways. The Art. 100 definition of raceway indicates that it is an enclosed channel designed ...

A. If a raceway is subjected to different temperatures, and where condensation is known to be a problem, the raceway must be filled with a material approved by the authority having jurisdiction (AHJ) ...

Greg Kessinger is SD&I’s fire alarm and codes expert and a regular contributor. Email him your fire & life safety questions at [email protected]. Whether you are practicing for a fire alarm exam or ...