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).
Comparison of the merits and demerits of three different types of fuse holders for distribution boxes.
| Identifier | ExFiles\Box 50\1\ Scan196 | |
| Date | 20th August 1924 | |
| EFC. {E. Fowler Clarke - Electrical Engineer} 20.8.24. X.4410. DISTRIBUTION BOX FUSES It is considered that the fuse holder having the nut and bolt type of terminal with the locking arrangement is the best, reasons for which opinion are below:- Relative merits and demerits of the three types of fuse holder. Advantages - Standard Type. Convenient. Screws need only be loosened when fitting new wire. No fear of losing terminal screws and washers. Disadvantages. Wire must be passed in one direction round terminal for security. Tendency to stretch wire when tightening up terminal screws. Liability of wire to get damaged through getting into thread of screw. Nut and bolt type. - Advantages. Safe, no fear of wire being stretched. Wire not subjected to any chafing - simply clamped between two stationary flat surfaces. Convenient - terminals need only be loosened to fit new wire. Wire can be safely passed in either direction round terminal. No fear of losing terminal nuts and washers. Disadvantages. Wire not quite so easily fitted as in standard on account of locking arrangement. Screw and socket type - advantages. No fear of wire being stretched. Disadvantages. Not so convenient - screws must be entirely removed to fit new wire. Possibility of losing screws. Wire not easily rolled into a ball at each end. Possibility of wire being cut through being clamped between edge of socket and screw. Contd. C.A.P. [Watermark: MADE AT CROXLEY] | ||