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).
The merits of single pole versus semi-earthed electrical systems.
| Identifier | ExFiles\Box 61\2\ scan0195 | |
| Date | 5th December 1922 guessed | |
| contd:- -2- earth can occur on one side without upsetting the system. The single pole system is undoubtedly preferable on the score of simplicity and if correctly carried out, should be always quite as satisfactory. There is much to be said for the intermediate semi-earthed system, in which the battery earth connection is made through a fuse as above, combining as it does some of the advantage of both of the two extremes. EFC. | ||