Which statement about CL2 cables is true?

Which statement about CL2 cables is true?

• A. Environmental plenums, risers, and other environmental air spaces are where CL2 cables are designed to operate
• B. Data centers require CL2 cables exclusively
• C. Outdoor spaces are ideal for CL2 cables
• D. Power-limited Class 2 or 3 cable for general-purpose use except in environmental plenums, risers, and other environmental air spaces. Resistant to the spread of fire.

Answer: (D)

CL2 and CL3 cables are designed for power-limited, general‑purpose use in building wiring, providing limited current and safer operation for low‑voltage circuits. They are not intended for environmental air spaces like plenums or risers unless they have a plenum‑rated jacket (the P versions). In those spaces you’d use the plenum‑rated versions to meet fire‑spread and smoke‑production requirements. These cables are built to resist flame propagation, which helps limit fire spread in typical indoor installations. So, the statement that describes using power‑limited Class 2 or 3 cables for general purpose, with the caveat that they’re not used in environmental plenums/risers unless plenum‑rated, and noting their fire‑resistance, best captures how these cables are used. The other options are less accurate: plenums aren’t the sole operating spaces for CL2/CL3, data centers don’t require them exclusively, and outdoor spaces aren’t the ideal setting for these cables.

CL2 and CL3 cables are designed for power-limited, general‑purpose use in building wiring, providing limited current and safer operation for low‑voltage circuits. They are not intended for environmental air spaces like plenums or risers unless they have a plenum‑rated jacket (the P versions). In those spaces you’d use the plenum‑rated versions to meet fire‑spread and smoke‑production requirements. These cables are built to resist flame propagation, which helps limit fire spread in typical indoor installations. So, the statement that describes using power‑limited Class 2 or 3 cables for general purpose, with the caveat that they’re not used in environmental plenums/risers unless plenum‑rated, and noting their fire‑resistance, best captures how these cables are used. The other options are less accurate: plenums aren’t the sole operating spaces for CL2/CL3, data centers don’t require them exclusively, and outdoor spaces aren’t the ideal setting for these cables.