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).
Specification table for a tapped electrical winding, detailing the number of turns, wire gauge, and nominal voltage for each section.
| Identifier | ExFiles\Box 32\4\ Scan059 | |
| Date | 8th February 1926 guessed | |
| Page: -2- TABLE DATA Headers: Section., No. of turns., Arrgt., S.W.G., Nominal voltage. Row 1: No. of turns: 90, S.W.G.: 13 1/4, Nominal voltage: 72 Row 2: No. of turns: 15, Nominal voltage: 12 Row 3: No. of turns: 15, Nominal voltage: 12 Row 4: No. of turns: 15, Nominal voltage: 12 Row 5: No. of turns: 15, Nominal voltage: 12 Row 6: No. of turns: 45, S.W.G.: 13 1/4, Nominal voltage: 36 Row 7: No. of turns: 15, Nominal voltage: 12 Row 8: No. of turns: 45, Nominal voltage: 36 Totals: Total, No. of turns: 255., Nominal voltage: 204. | ||