Is it true that CL3R can be substituted for CL3P?

The assertion that CL3R can be substituted for CL3P is false. CL3R and CL3P cables serve different purposes and are designed for distinct applications within communication and networking infrastructures. The CL3R designation is intended for residential installations where the cable can be run in walls and between floors but is rated for reduced risk of fire in residential environments. On the other hand, CL3P cables are designed for use in plenums, which are spaces used for air circulation for heating and air-conditioning systems; they have stricter fire safety requirements and are manufactured to reduce the emission of smoke and toxic fumes if they were to catch fire.

Due to these differences, substituting one for the other could violate building codes and safety regulations, which are crucial to ensuring the safety and integrity of both installations and buildings. It's essential for installers to adhere to these specifications to comply with local codes and standards. Therefore, the correct stance is that CL3R cannot be used as a substitute for CL3P.