Underwriters’ Laboratories

Standard for Safety Electric Fans - Ninth Edition; Reprint with revisions through and including March 9, 2016
 N 507

Annotation

These requirements cover:

a) Fans and blowers that circulate air, such as desk, ceiling-suspended, and hassock fans;

b) Fans and blowers that ventilate air, such as attic, whole-house window, through wall, and direct discharge fans;

c) Ducted fans and blowers that exhaust air to the outside of a building structure, such as in-line, wall insert and ceiling insert fans;

d) Dryer type fans used for drying carpets or floors;

e) Commercial display blowers;

f) Evaporative coolers;

g) Evaporative cooler replacement pumps;

h) Air-filtering appliances;

i) Component fans;

j) Low voltage component fans;

k) Residential cooking area fans, such as rangehoods and downdrafts;

l) Hand dryers without heater; and

m) Recirculating and blending units except as noted in 1.8(h).

These products are rated 600 volts or less and are intended to be employed in accordance with the National Electrical Code, ANSI/NFPA 70.

These requirements do not cover:

a) Air heaters incorporating fans, heating-ventilating units, or blowers comprising components of such equipment as furnaces, mechanical-refrigeration equipment, or air conditioners;