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).
Specifying the use of 19 SWG pure tin fuse wire for the junction box after testing samples.
| Identifier | ExFiles\Box 61\2\ scan0415 | |
| Date | 11th November 1920 | |
| R.R. 245B (100 T) (S.H. 89. 22-7-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2769 X2575 Mr Booth from BY/Mtn. c. EFC. BY/Mtnl1/P1.11.20. RECEIVED, NOV 1920 X.2575 CHASSIS - WIRING. RE FUSE WIRE FOR JUNCTION BOX. ----------------- X.3564 Please note that EFC, has received two samples 19 SWG and 20 SWG of pure tin fuse wire, and has proved that the most suitable is the 19 SWG. This wire fuses at 34.5 amps. Will you kindly add to your Part List and also to the drawing that the fuse wire should be pure tin wire 19 SWG. BY/Mtn. | ||