What is required for rigid nonmetallic conduit fittings to be used with ENT?

The requirement for rigid nonmetallic conduit fittings to be used with Electrical Nonmetallic Tubing (ENT) is that they must be solvent-cemented with approved solvent cement. This means that when using these fittings, it is essential to ensure they are properly bonded to the ENT by using solvents that have been specified and approved for such applications. The use of solvent cement creates a durable and leak-proof connection that is critical for maintaining the integrity of the electrical installation. This method of joining ensures that the fittings and the tubing are rigidly secured in a way that can withstand environmental factors such as vibrations and temperature changes, which could potentially impact the performance and safety of the electrical system.

The requirement for solvent adhesion aligns with best practices in electrical installations, as it promotes a secure and long-lasting fit that minimizes risks associated with loosening or disconnection over time.