What is the minimum distance PEX shall not be installed from any recessed light fixture?

The correct distance that PEX (cross-linked polyethylene) piping must be installed from any recessed light fixture is a minimum of 12 inches. This requirement is in place primarily for safety reasons, to reduce the risk of the PEX being exposed to excessive heat.

Recessed lighting fixtures generate heat during operation. If PEX tubing is placed too close to these fixtures, the heat can compromise the integrity of the PEX, leading to melting or deformation over time. By maintaining a minimum distance of 12 inches, the tubing is better protected from the thermal effects of the light fixture, ensuring that the plumbing system remains functional and safe.

While other distances mentioned in the choices might seem reasonable, they do not align with the established building codes and safety guidelines that govern the installation of PEX in proximity to heating elements like recessed lighting. The specified 12-inch distance is a standard that helps ensure both the durability of the PEX material and overall safety within the installation environment.