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).
Letter to The Hart Manufacturing Co. requesting a quotation for two switchboards for a miniature house lighting installation.
| Identifier | ExFiles\Box 38\3\ Scan080 | |
| Date | 22th November 1918 | |
| R.H. 838a (500 T) (S.D. 408. 28-4-17.) Bm. 2/156/13. X.3362. EFCl/AT22.11.18 22.11.18. Messrs. The Hart Manufacturing Co. 77, Rochester Row, London S.W.1. Dear Sirs, Re Miniature House Lighting Installation. Will you kindly let us know what you can do for us in the way of supplying two small switch boards for a miniature house lighting installation. The installation is to be rather on the lines of a car lighting set being a 12 volt system, and consisting of a small 12 ampere dynamo with voltage controller, battery of 6 single cells of 100 ampere hour capacity, and lamps with minature holders and fittings. We have everything except suitable switch boards, and of these we require a distributing board containing 3 switches and 3 fuses (single pole) for the 3 distributing circuits. This board should be as neat as possible as it is to be fixed in the dwelling room of a private house. The other board is a main switch board and should contain dynamo/switch, double pole fuse for main supply circuit, also a central zero battery charge and discharge ammeter reading 0 to +- 10 amperes or preferably 12 amperes, the whole board to be as neat and compact as can conveniently be arranged. Switches and fuses on the smaller board should be suitable for 2 amperes. P.T.O. | ||