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).
Conductor sizes for the chassis electrical system.
| Identifier | ExFiles\Box 168b\2\ img188 | |
| Date | 3rd March 1930 | |
| EFC. X 7560 BY/RDS/DM.{D. Munro}3.3.30. X.7560 Chassis Electrical System. Conductor Sizes. With reference to the suggestion that the 70/36's cable can be eliminated from our standard list, we have now looked into this, and we would propose the following:- Distribution Board to Switchbox - Gauge Light, 40/36's. Starter Switch to Automatic Switch, 90/36's. Distribution Board to Accessory Box(Both), 90/36's. Accessory Box to Body Light Box, 90/36's. Main Switch to Motor - Teaser, (Both), 90/36's. Accessory Box to Starter Switch, 90/36's. With regard to the 23/36's, as we shall have to maintain this for use up the steering column we suggest that the remaining circuits at present using this size of wire be retained as they are fairly light ones, and to use a larger size of wire would have two effects, thus :- 1. Increase the cost. 2. Making the amount of 23/36's required to our specification as to be almost negligible with a resultant increase of cost in production. The suggestion to have 90/36's for the headlamp circuit between the switchbox and distribution board, and 40/36's from the distribution board to the lamp sockets, is not practicable, as we should upset the colour scheme, and therefore, while we agree that the cable carrying the supply for two lamps should be heavier than the cable carrying the supply for one lamp, we would prefer to leave it as at present arranged, and of course, any change of 90/36's means larger diameter cable and consequent crowding of conduits. BY/RDS | ||