Phasing KW and LW

Well, it appears that you realize that the KW outputs and the LW outputs are opposite. Do you need the instruction sheets?

Yes, a common common for the layout and switching the hot is solid logic.

So, here is the Lionel video on phasing with more than you need , but it has the testing procedure at ~10 min.

remember that the outputs should be set at the same voltage before checking the phasing. This may help to confirm that the voltage between the two hots should be close to zero

yes, is about the orientation of the transformer plug in the receptacle.

caution: using different receptacles in the room could result in an out of phase condition. This is due to the possibility of the receptacles' circuit being on different hot legs of the house supply to the electric panel.

The orientation of the the power plug WILL affect phasing, so once you determine correct phasing, you want to mark the plugs so you can get them back the same way.

As you correctly determined, Lionel's multi-throttle transformers use U as the common (outside track), while the single-throttle transformers typically use U for the hot (center rail) connection. 

gunrunnerjohn posted:

The orientation of the the power plug WILL affect phasing, so once you determine correct phasing, you want to mark the plugs so you can get them back the same way.

As you correctly determined, Lionel's multi-throttle transformers use U as the common (outside track), while the single-throttle transformers typically use U for the hot (center rail) connection. 

Thank you. I thought I had remembered something years ago when I first thought this up that the plug orientation in the outlet would affect the phasing. 

I have a multi plug extension cord powering the table so once everything is set up they can be marked and remain plugged in as a set.