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).
Instruction sheet detailing diameters and fusing points for various fuse wires.
| Identifier | ExFiles\Box 61\2\ scan0281 | |
| Date | 30th December 1919 | |
| RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 X.2515 84 ① ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Mr Clark 30/12/19 Order No: - Customer's No.: - X.2515 Diameters & fusing points of X.3749 fuse wires. X.3771 Wire out of Smith cut-out. Diam .009" Fusing Current 2.75 Amps 34. S.W.G. Wire supplied by Mr Wyer Diam = .018" Fusing Current 9.75 Amps. 26. S.W.G. Both of the above wires are tin-lead alloy & the length in each case was that of the fuse holder in the Lucas switch box. Signed: [Signature] 30. S.W.G. required for 4 amps. This Sheet must be filed on completion of the work. | ||