I seem to remember having read that 3 is the recommended max. -Or was it that they approximatly use 3VA each?
In any event, when you use contact-tracks like the 5146, there can be some burning on the contack-pads. (which must then be cleaned, and they are good again...)

I switch 3 coils with my 5146-type tracks for a long time, and everything is working fine for years.
I use a separate 100VA transformer (of the TITAN brand) for this control, and I havent bothered with the inrush current. (-which is certainly there, but the old trafos can handle it easily)

Ha! I get what Mikey is saying; The 5146 tracks are notoriously flimsy and unrealiable!
I atually dont use any of the M-track contact-tracks, but rather the K-track equivalent. (That´s why I said "like 5146").
Once installed and working, they are quite dependable, just DONT touch them with with your fingers or anything else that is not a sprung slider!!!

I was atually decided on to NOT use these tracks, but with time I found that they took well to repairs and being left alone.
I now fully rely on them for branchline control (3 pieces), and 2 other pieces on my main-line, whose job it is to count sliders in order to distinguish between freight and passenger trains. (these 2 last pieces go to a PLC digital input, and draws practically no power)

Hi Jim,

I've set up my analog layout using the 7072 control boxes. For a few turnouts, I've got the turnout, two home signals and two advance signals all controlled by a single pair of 7072 red/green buttons with blocks ahead of them to control passage. I cleaned and tested each turnout and signal to be sure their solenoids slide easily, and their mechanical linkages, etc were working reliably, so they change predictably with a single push of the button. So far, so good. I'm keeping an eye on my grandkids when they operate them so I don't fry anything, and I've got quite a few 6001 trafos to not overload the L circuits on my 6627's while running.

I also was careful to only use 7072's which aren't fried/warped as they tend to be in the Used market.

Someday, I'll take the plunge on using circuit tracks; my wiring under the layout is enough of a (labeled) rats' nest as it is...

I hope this helps, from one M-track analog guy to another!

Brian