Problem with current on sidings

[RobertInOntario]

Rob,Did you use any jumper wires? If your switch is powered any wire braid touching the other post or close enough to cause a arc when the motor is activated? If you are using Atlas selectors make sure no braid is touching the other post.

If the siding is blocked (isolated) is the wires reversed at the rails or toggle switch? Please don't ask how I know this. :oops:

Thanks... I tried connecting another transformer to the rails (with the main power turned off) and I had the same result.

At any rate, I'm happy now that the Atlas turnout is working, but I'm still not sure why that one is OK but the two Peco ones that I tried are not!