Found in the attic of a high-rise building, this wireway was used to supply many feeders, panelboards and other electrical equipment on the floors below. A wireway is defined as a “sheet metal trough ...
This answer is based on the 2017 NEC. A. As noted in Sec. 376.2 of the 2017 NEC, a metal wireway is defined as a sheet metal trough with hinged or removable covers for housing and protecting electric ...
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