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 ...

Chapter 3 of the Code is titled “Wiring Methods and Materials.” The first article in Chapter 3 is Art. 300, “Wiring Methods.” This article covers the general wiring methods for all wiring ...

While exposed ceilings in office interiors lend a spacious, open feel, this trendy architectural feature has created a new challenge: finding a viable return air path. Plenum ceilings use the area ...