jar546
CBO
Restrictions of use of Type NM cable also exist elsewhere in the NEC. For example, Type NM cables are not permitted to be installed in ducts, plenums, and other air-handling spaces.
See also 300.22, which limits the use of materials in ducts, plenums, and other air-handling spaces that can contribute smoke and products of combustion during a fire.
Why is NM cable not allowed in plenum spaces?
See also 300.22, which limits the use of materials in ducts, plenums, and other air-handling spaces that can contribute smoke and products of combustion during a fire.
Why is NM cable not allowed in plenum spaces?
