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).
Table of fusing currents for different gauges of copper wire.
| Identifier | ExFiles\Box 61\2\ scan0493 | |
| Date | 19th September 1928 | |
| X2515 19.9.28. TABLE OF FUSING CURRENTS of COPPER WIRE. Gauge No. Fusing current (amperes). 32 Eureka 14 34 11 30 18 28 24 26 32 24 55 EFC. | ||