Specifies requirements for 13 A switched and unswitched shuttered socket-outlets for household, commercial and light industrial purposes, with particular reference to safety in normal use. The socket-outlets are suitable for the connection of appliances, sound-vision equipment, luminaires, etc. in a.c. circuits only, operating at voltages not exceeding 250 V r.m.s. at 50 Hz using plugs in accordance with SS 145-1. Specifies requirements for 13 A shuttered socket-outlets in single or multiple arrangements, with or without associated controlling switches, for flush mounting in suitable boxes or for surface or panel mounting or for portable use. Fixed socket-outlets are intended for use with cables conforming to SS 358-3 and cables to the relevant part of BS EN 50525, having copper conductors. Portable socket-outlets are intended for use with flexible cables, conforming to SS 358-5. Includes socket-outlets incorporating fuse links, switches and indicator lamps and incorporating electronic components as detailed in Annex I.