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).
Results of fuse tests, detailing the amperage at which fuses blew under different test conditions.
| Identifier | ExFiles\Box 61\2\ scan0341 | |
| Date | 2nd August 1920 | |
| RR 300 (120B) (SF 349 24-1-19) MP 200552 91151 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To E.F.C. Order No. P.A.H. Customer's No. Re X August 2nd 1920 approx., from switching on current (1.6 amps) to fusing current, with 3-second pauses on each adjustment. There were 11 tests in all; 3 of A and 4 each of B and C. The results were as follows:- A.{Mr Adams} 1. Fused at 5.9 amps. 2. " " 5.4 " 3. " " 5.1 " B. 1. Fused at 3.4 amps. 2. " " 3.35 " 3. " " 3.35 " 4. " " 3.4 " C. 1. Fused at 3.65 amps. 2. " " 3.4 " 3. " " 3.4 " 4. " " 3.4 (crossed out) " Signed Cont'd.{John DeLooze - Company Secretary} This Sheet must be filed on completion of the work. | ||