NEC Section 300-22(c)

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mheyvz

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Please tell me about NEC Sec 300-22(c). I am just new in this field and I encountered this during my researches. I have a project which includes this and I need to clarify this matter.
 
Re: NEC Section 300-22(c)

Could you be a bit more specific?

Generally speaking, that section is refering to plenum spaces. Plenum spaces contain the air that is breathed in a building. With that in mind, the materials that can be installed in them is very limited. You are not allowed to install something in a plenum that, when introduced to flame, emits noxious gases into the air handling system and therefore into your lungs.
 
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