Power transformer wiring:

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Orange = Electrostatic shield (tie to ground)

Yellow = 1,2 first primary wiring; 3,4 are the second primary wiring. Connect in series (2 & 3 connected) for 240V operation. Connect in parallel (1,3 and 2,4) for 120V operation.

Secondary 1 has 2 blue wires (330V) and one brown wire (Center Tap)

Secondary 2, 3, and 4 are all gray and are 6.3V heaters.

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