Red Line
June 02, 2022
UL 551
UL Red Line
Edition 8
Published Date: June 02, 2022
ANSI Approved: May 24, 2022
Scope
005510-000000-0000001 Scope
1.1 These requirements cover limited duty welding and cutting power sources, wire feeders, torches, and electrode holders that are intended for use by a layperson in a nonindustrial setting in accordance with the National Electrical Code, NFPA 70. Products covered by these requirements include only those welding products rated 600 volts or less, and are commonly known as hobby welders.
1.2 These requirements do not cover motor-generator sets or rectifier- or resistance-type welding machines. These requirements do not cover industrial or professional use welders.