I guess this is really what prompted my question and several of you have brought it up. Starter panels..........
When all you have is a starter panel mounted on the wall, with a start/stop buttons in the front, it is easiest to simply use the line voltage.
We get these requests various times and I was not sure what is the proper way of doing. It is a pain, although the safest, to use a control transformer.
What we build and sell, generally is a poly enclosure, so if that button would somehow fail, the next person to touch it could potentially be the next path to ground.