NEC cabling installation requirements are straightforward, but markings and new offerings may create confusion. You're not alone if markings and listings are making your plenum cabling selection a ...
Time for a quick pop quiz. Where does the NEC provide all of its requirements for wiring methods? If you answered Chapter 3, you are almost correct. When installing ...
Many in our industry believe the duct material used in an installation determines how well the HVAC system moves air. Because of this mentality, flexible duct often gets a bad name. The issue isn’t ...
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