[Ed_Dinning]

Hi Gents, as per Eddie's post; the meter windings are wound with stranded PVC insulated wire. This will carry the current required and will also give high isolation between supplies, but will cause additional heating due to the increased pri current. It will also cause additional droop in output voltages due to transformer regulation.
With 240v in on the 240v tap these windings typically give 7.5V out on no load; rectified this will give over 9v DC on no load, but possibly closer to 6v with a 40mA load. It will depend on the rectifier circuit used.

On Eddie's transformer I provided an additional meter winding as is available on request.

Note that variations are available on these transformers as long as the consumption remains within design limits. Note that a much bigger transformer is needed if you need to burn in power valves, as well as increased heatsinks on the regulators.

Ed