After some researching and experimentation I have decided to wire my layout for TMCC/Legacy and DCC, but not to run both at the same time on the same track. The layout is basically 2 loops and a switching yard. Track is Atlas 3 rail, power is a Lionel ZW-C with 4 180W Powerhouses. For DCC I am using NCE's 10 amp boosters. It will be wired for common ground, which you can do with these NCE boosters. There will be three power districts, each loop and the yard, so I only need 3 boosters. I want to be able to select for each district how it gets power, either from one of the 4 handles on the ZW or the booster. In this way I could power the whole layout off of one handle if I'm just running a conventional locomotive. Here is a rough sketch of powering one district, each line is both power and common (Except the green one which is just common for the Legacy signal.).
Repeat this three times for each district. Using the rotary switch (It is a high amp non-shorting switch.) I can pick which handle or a DCC booster will power the track. I show a on/off switch (Probably a DPST switch, although a SPST on the power leg would be enough.) between the ZW and the booster so that if I'm not planning on running DCC I don't have to have the boosters powered, but it shouldn't be needed otherwise.
So my question is, does this make sense and are there any issues I am missing?
