Wiring diagram for a 110 Volt 3 B.HP D.C. motor control board.
| Identifier | ExFiles\Box 61\2\ scan0036 | |
| Date | 26th July 1928 guessed | |
| MAINS + - IMPORTANT. Start only with armature resistance all in and field resistance cut out. FUSES MAIN SWITCH FIELD REG TOR. ARM. REG TOR. F+ A+ A- F- LEADS TO MOTOR 110 VOLT 3 B.H.P. D.C. MOTOR CONTROL BOARD. E.A.C. | ||
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).