From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Specification for a single core electric cable.
| Identifier | ExFiles\Box 168b\2\ img118 | |
| Date | 25th April 1925 | |
| X802 ROLLS-ROYCE LIMITED. SPECIFICATION NUMBER 266. MATERIAL. Electric Cable. TYPE OF CORE. --Single. CORE SIZE. 90/36. OUTSIDE DIAMETER. .200" maximum. CONDUCTOR. High Conductivity Tinned Copper Wire. DIELECTRIC. One layer pure rubber, one layer of white vulcanizing rubber, and one layer of black vulcanizing rubber. Total radial thickness of whole .030". Radial thickness of pure rubber .006". PROTECTIVE COVERING. Single layer of varnished cable cloth. Braid of polished cotton yarn, and treated with Gloy adhesive during braiding to prevent slipping or fraying of braiding material. Colour of braid Red, unless specified otherwise on our orders. | ||