Which cable marking is used in residential dwellings?

Which cable marking is used in residential dwellings?

• A. CMP
• B. FPLP
• C. CMG
• D. CMX

Answer: (D)

Cable markings tell you where a cable is allowed to be used and what environment it’s rated for. In a home, you want a general-purpose building wire that’s suitable for indoor dry locations. The marking that corresponds to this broad, residential-use category is CMX. The others denote specialized environments: CMP and FPLP are plenum-rated cables used in air-handling spaces and fire-safety-rated pathways, which aren’t typical for standard home wiring, while CMG is intended for damp or wet locations. So CMX best matches the common residential interior wiring needs.

Cable markings tell you where a cable is allowed to be used and what environment it’s rated for. In a home, you want a general-purpose building wire that’s suitable for indoor dry locations. The marking that corresponds to this broad, residential-use category is CMX. The others denote specialized environments: CMP and FPLP are plenum-rated cables used in air-handling spaces and fire-safety-rated pathways, which aren’t typical for standard home wiring, while CMG is intended for damp or wet locations. So CMX best matches the common residential interior wiring needs.