Electric furnaces must be tested in accordance with which standard?

In the context of electric furnaces, the appropriate standard for testing is UL 1995. This standard addresses the safety requirements for heating and cooling equipment, including electric furnaces. Compliance with UL 1995 ensures that electric furnaces are designed and manufactured to operate safely without posing any undue risk to users. The testing outlined in this standard focuses on the performance characteristics, safety mechanisms, and overall reliability of the equipment, making it crucial for manufacturers and installers.

UL 499 pertains to the safety of electric heating appliances in general but is not specifically focused on the comprehensive aspects of heating and cooling equipment that UL 1995 covers. UL 1996 relates to specific types of listed electrical equipment that are not relevant to furnaces. UL 727 is associated more with ventilation and exhaust systems rather than the testing of electric furnaces. Hence, UL 1995 is indeed the correct standard for ensuring that electric furnaces meet stringent safety and performance guidelines.