UL 1278 PDF

 

1 Scope

1.1 These requirements cover movable and wall- or ceiling-hung electric room-heating equipment rated 600 volts or less to be employed in ordinary locations in accordance with the National Electrical Code, ANSI/NFPA 70.

1.2 These requirements do not cover fixed heaters, location-dedicated heaters, baseboard heaters, duct heaters, central-heating furnaces, fan-coil units, panel- or cable-type radiant-heating equipment, electric boilers, or any other electric heating equipment or appliances that are covered in or as a part of separate, individual requirements.

 

Summary of Topics

This revision of ANSI/UL 1278 dated May 29, 2025 replaces the revision dated May 27, 2025. A portion of 33.18, and the entirety of 20.3.4, 20.3.5, 33.19, 40.1.15, and Sections 42.4A and 42.4B were inadvertently omitted from the May, 27, 2025 revision and needed to be added.

The May 27, 2025 revisions included Portable Electric Heaters; 3.5A, 3.5B, 3.9A, 3.10A, 3.13A, 3.13B, 3.18.1, 3.19A, 4.9.5, 12.1A, 12.3, 12.4, Sections 16 – 16D, 20.2.7, 20.3.1, and 28.2.9.