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).
Testing fuse wire for a Lucas switchbox, which was found to be unsuitable.
| Identifier | ExFiles\Box 61\2\ scan0381 | |
| Date | 31th August 1920 | |
| X.2515 To Ry. from EFC. c. to BY/WER. c. to Sft.{Mr Swift} c. to EP.{G. Eric Platford - Chief Quality Engineer} EFC4/T31.8 20. 1 X. 2515 - FUSE WIRE FOR LUCAS SWITCHBOX. X.3749 We have tested a sample of fuse wire taken from a quantity obtained for Mr. Brock in connection with his condenser testing. This wire we do not find to be suitable for the field fuse of the Lucas switchbox, as it fuses at about 3¾ amperes only, whereas we require the fusing current to be not less than 4½ and not more than 5½ amperes. EFC. | ||