UL 1917

These requirements cover solid state speed controls rated 300 volts or less, single phase, intended to b e connected to 15- 20 ampere branch circuits and intended to be installed in accordance with the National Electrical Code ANSI/NFPA 70 and used with:

a) Fans and blowers that circulate air, such as desk, bracket, ceiling, hassock, pedestal, and utility fans;

b) Fans and blowers that ventilate air, such as attic, wall-insert, ceiling-insert, household hood- an d canopy-types and window fans;

c) Evaporative coolers;

d) Air-filtering appliances;

e) Fan- type deodorizers; and

f) Fan-type air fresheners.

Inductive-type and capacitive-type fan speed controls are also covered by these requirements.