Commercial electric water heaters are required to comply with which standard?

Commercial electric water heaters are required to comply with UL 1453. This standard pertains specifically to the safety of water heaters and their components, focusing on ensuring that commercial units operate safely under expected conditions. It addresses aspects such as electrical safety, testing requirements, and performance criteria, which are crucial for the public's safety and the reliability of the appliances in commercial settings.

The other standards mentioned do not apply specifically to commercial electric water heaters. For example, UL 174 deals with household electric cooking appliances, while UL 2523 focuses on solar water heating systems, which are not relevant to conventional electric water heaters. UL 101 is associated with standard specifications for products related to utilities but does not directly address electric water heaters. Therefore, UL 1453 is the relevant standard governing the safety and performance criteria for commercial electric water heaters.