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 report on the fusing currents of tin wire in a Lucas junction box.
| Identifier | ExFiles\Box 61\2\ scan0433 | |
| Date | 4th January 1921 | |
| X 2575 X.3564. FUSING CURRENTS OF TIN WIRE X.2515. IN LUCAS JUNCTION BOX. The wire submitted for test was fitted in the standard Junction box and current raised gradually while the box was subjected to a small vibration. The average fusing point was 29.0 amps. With a rapid rise of current the fusing point is about 35.0 amps. Inst. 22596. 150 + shunt. F.J.A. | ||