UL 1450 PDF

1 Scope

1.1 These requirements cover household and commercial air compressors, vacuum pumps, inflators (both compressor-type and blower-type inflators), paint sprayers, paint mixers, and paint pigment dispensers intended for indoor or outdoor use or both in accordance with the National Electrical Code, ANSI/NFPA 70. These requirements also cover motor-operated air compressors intended for use with sprinkler systems in accordance with the Standard for Installation of Sprinkler Systems, NFPA 13, and the National Electrical Code, ANSI/NFPA 70.

1.2 These requirements do not cover products:

1. a) Rated more than 600 V,

2. b) Employing a universal motor rated more than 250 V, or

3. c) Intended for installation and use in a hazardous location.

1.3 These requirements do not cover medical and dental products; products intended to be used in heating, air conditioning, or refrigeration systems; paint heaters; electrostatic paint spraying products; or other products covered by separate requirements.

1.4 These requirements do not cover pneumatic tools and accessories that are covered by the Outline for Investigation for Portable Pneumatic Tools, SubjectUL 7700-1.

1.5 These requirements do not cover industrial compressors that are primarily supplied to an individual customer specification with regard to pressure, flow, electrical supply, or optional equipment.

Summary of Topics

This revision to ANSI/UL 1450 dated April 16, 2025 includes the following changes in requirements:

– Proposed addition of Supplement for fire sprinkler air compressors; 8.3 (deleted), 36.2.1 (Exception No. 2 deleted), 37.2 (Exception deleted), 64.2.4 (deleted), 67.8 (deleted), Supplement SC

– Miscellaneous updates