ILO Home
Go to the home page
Site map | Contact us Franšais | Espa˝ol

CISDOC database

Document ID (ISN)33164
CIS number 80-324
Year 1978
Convention or series no.
Title Standard for safety: Emergency lighting equipment.
Bibliographic information ANSI/UL 924-1978, Fifth edition, Underwriters Laboratories, 207 East Ohio Street, Chicago, Illinois 60611, USA, 16 and 19 Feb. 1979. 36p. Illus. Price: US$4.50. Revision pages supplement: 41p. Illus. Gratis.
Abstract This standard (adopted as American national standard ANSI/UL 924 on 16 Oct. 1978) issues requirements for battery-powered emergency lighting and power equipment for use in ordinary indoor locations, in accordance with the National Electrical Code (CIS 78-31). Such equipment is intended to automatically supply illumination and/or power to critical areas and equipment in the event of failure of the normal supply. Definitions are followed by sections devoted to: construction (frame and enclosure; corrosion protection; current-carrying parts; wiring; earthing; batteries; electronic circuits; capacitators; overcurrent protection); exit lights; performance (leakage current, current input temperature, overvoltage and undervoltage, voltage surge, dielectric withstand); ratings; markings; instruction manual; low-frequency and high-frequency inverters. The supplement (revision pages) indicates changes from, and additions to, previous editions.
Descriptors (primary) USA; safety lighting; emergency current supply
Descriptors (secondary) design of electric circuits; leakage current; electric lighting equipment; standard; electrical overload protection; marking; storage batteries
Document type F - Information notes, codes of practice, standards
Subject(s) Electricity
Broad subject area(s)
Browse category(ies) Lighting and colour