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).
Alterations to the wiring diagram blueprint for the E.A.C.7 chassis, specifically discussing earthing connections.
| Identifier | ExFiles\Box 168b\2\ img123 | |
| Date | 12th August 1926 | |
| x7580 C. EFC. BY/HSB/M.12.8.26. E.A.C.7. CHASSIS. WIRING AND FITTINGS - SEC:7360. Herewith please receive one Blue Print of:- F.75192 Wiring Diagram E.A.C.7. Chassis., for your reference. We also attach one Blue Print of the above to EFC's copy. This Print has been altered to agree with the remarks contained in EFC2/T3.7.26. and EFC2/T6.7.26. in so far as they affect "P" Dept. The title of the "Main Circuit Switch" has not been altered as the L.O.P. for the Switch itself still retains this title. The earthing connections of the relay switch and the Main Circuit Switch have not been shewn as this drawing is intended for the use of the Works when wiring up chassis and is not a full theoretical Diagram. We are quite agreeable to having these connections shewn if EFC insists, but it would also be necessary to shew the earth connections at various other points - Condenser Earth, etc., whereas the title states "Earth return system". -> kindly say. BY/H.B. HBS EFC. Agrees not necessary on L.O.P. | ||