1. Specification for industrial plugs, socket-outlets and couplers for a.c. and d.c. supplies. (30th September 1968) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (144 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Specification for mining type flameproof gate-end boxes. Gate-end boxes with air-break circuit-breakers (for use on 3-phase a.c. circuits up to 650 volts) Part 2, (30th August 1968) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (22 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗