UL 1022

Line Isolation Monitors

UL 1022

1 Scope

1.1 These requirements cover dynamic line isolation monitors and related supplementary indicating units for supervising isolated power-supply circuits in inhalation-anesthetizing locations in accordance with the National Electrical Code, NFPA 70.

1.2 The detectors and supplementary indicating units are intended to be:

a) Installed in a nonhazardous anesthetizing area, above a hazardous area;

b) Installed 5 feet (1.52 m) or more above the floor; or

c) Included as part of an isolated power-supply center for an anesthetizing location.

1.3 These requirements do not cover ground fault circuit interrupters for use on grounded alternating current systems in accordance with the National Electrical Code, NFPA 70.

1.4 Deleted August 20, 2001