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).
Test results for wire and cartridge type fuse burnout currents at various gauges.
| Identifier | ExFiles\Box 166\7\ img017 | |
| Date | 27th May 1933 guessed | |
| -4- Under the following conditions the wire burnt-out after carrying a current for ½ min. 30 S.W.G. 36.6 amperes. 32 S.W.G. 28.0 " 34 S.W.G. 23.0 " 36 S.W.G. 15.0 " All the above tests were carried out under the conditions stated above. Cartridge Type fuses. fusing currents for various gauges of wire 30 S.W.G. 24.0 amperes. 32 S.W.G. 19.1 " 34 S.W.G. 13.5 " 36 S.W.G. 9.0 " Wire burnt out after carrying current for ½ min. 30 S.W.G. 20.5 amperes. 32 S.W.G. 17.1 " 34 S.W.G. 12.6 " 36 S.W.G. 7.5 " | ||