Do electrical resistance heating elements installed in air handling systems require over-temperature protection devices?

Electrical resistance heating elements installed in air handling systems are indeed required to have over-temperature protection devices. This necessity is rooted in safety considerations to prevent potential fires and damage due to overheating. Over-temperature protection devices serve as a crucial safeguard, ensuring that if the heating elements exceed safe operational temperatures, the system can automatically shut down or otherwise mitigate risks.

This requirement is aligned with standards that aim to enhance the safety of electrical installations and prevent hazards associated with heat generation in these systems. By integrating over-temperature protection, it provides a layer of redundancy that reduces the risk of equipment failure and enhances the overall reliability of air handling systems.

In essence, the implementation of such protection devices is essential for compliance with safety standards and for the protection of both the equipment and the environment where these systems operate.