Specifies requirements for extra low voltage systems for filamentlamps intended for ordinary use on supply voltages not exceeding1 000 V. The luminaires, being connected in parallel, are suppliedvia freely suspended continuous supporting conductors or profiles.The current in the output circuit of the system is limited to 25 A.This consolidated version consists of the first edition (1996) and its amendment 1 (2000). Therefore, no need to order amendment inaddition to this publication.