In this episode, we’re featuring subject matter expert Mark Lamendola's article, "Do You Know What the NEC Means by “Raceway”?" This term is sometimes confusing, even to people with years of ...

of space between the lowest part of the metal roof decking and the top of the cable, raceway, or boxes. Exception No. 1 allows rigid metal conduit (RMC) or intermediate metal conduit (IMC) to be ...