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).
Explaining the reason for the absence of fuses in the lighting circuits on chassis 46-LW.
| Identifier | ExFiles\Box 36\4\ scan 127 | |
| Date | 3rd September 1920 | |
| To EWT. from EFC. X.30146. EFC8/T3.9.20. X.3719b. X.25151 X.30146. RE R.R. ELECTRIC SYSTEM ON CHASSIS 46-LW - FUSES IN LIGHTING CIRCUITS. We have had no fuses in the lamp circuits of the post-war cars, the reason being principally that the system as originally arranged, making use of Lucas dynamo and Lucas switchbox, was fundamentally the Lucas system to which we have made slight alterations only, for instance, the addition of an ammeter in the battery circuit and the omission of an ammeter in the dynamo circuit, also the addition of a Lucas Junction box to allow of spare connections. The Lucas system had no fuses for the lights as it stood and as the system was a double wiring one, which, if properly carried out, does not lead to much trouble in the matter of short circuits on the lighting leads, we did not consider it necessary to go to the complication of putting in fuses. We may say that we have had no cases of trouble reported to us at this side on this score, and our experience with fuses generally in other portions of the system, has been such of late that in some respects we are glad that such fuses do not exist, which might easily have led to trouble from which, at present, we are immune. EFC. | ||