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).
Specifications for the standard windings on an electrical cutout.
| Identifier | ExFiles\Box 65\2\ scan0180 | |
| Date | 1st May 1929 | |
| X7740 1.5.29. STANDARD WINDINGS ON ELECTRICAL CUTOUT Shunt 2800 turns of 36 S.W.G. D.S.C. (.0076") Series. 44 turns of 15 S.W.G. D.S.C. (.072") EFC. | ||