A. The requirements of Sec. 300.22 apply to the installation and uses of electrical wiring and equipment in plenum spaces for environmental air. (C) Plenum Spaces for ...
Class 2 and Class 3 plenum cables listed as suitable for use in ducts, plenums, and other spaces used for environmental air shall be Type _____. The correct answer is: a) CL2P and CL3P Article 725 ...
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