Moonman,
Yes, I unplugged the 180W bricks from the ZW C and tested them with the digital multimeter I also though the reading was strange.
The 180 W bricks have polarized plugs so I think it’s impossible for them to be out of phase.
Yes I tested the A and D terminal with and without the tracks connected to the transformer terminals.
Thanks for the information about the RMS meter.
Richard
PS: An MTH steam engine smokes better than any Lionel steam engine no matter what kind of transformer you use😃!