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).
Query regarding the potential damage to an ammeter from being overloaded by two Smith cigar lighters.
| Identifier | ExFiles\Box 168\5\ img126 | |
| Date | 18th January 1928 | |
| S/W. EP.{G. Eric Platford - Chief Quality Engineer} X1162 LE5/H/18.1.28. OVERLOAD ON AMMETER. Will you please let me know what over-load the ammeter will stand. The point at issue is that in the event of a car having two Smith cigar lighters fitted the current consumed is roughly 30 amperes for 20 seconds. If both lighters happened to be used at the same time, is there any possibility of the ammeter being damaged. J.L.E. | ||