From ScR Training notes, thought to be circa late '60s? Originally on foolscap, the portion to the left is missing on my A4 photocopy. As a ScR document, it is likely for a Class 107 centre car.

CAV A/C Battery Charging - Schematic Diagram

Alternator type AC 1424-1
14" diameter, twin field control, output 150 amp.
RUG 12 rectifier (dual feed), lead acid BRA2 cells
For Derby trailer non-power vehicles

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