Lots of very good information on this thread.
My opinion based on my experience, your mileage may vary.
A 20 amp breaker will not provide the best over all protection for loads calling for a 15 amp breaker.
Just because something will function does not mean it is right.
Rethink hand tools. 100% of all corded tools with or with out extension cords can present a trip line which can cause damage or injury.
After a trip and fall run to the emergency room I switched to battery hand tools.
Also, look at your air lines. I use coil spring or ceiling retractable air lines. Keep the floor clear as much as possible.
I prefer to use conduit for all under layout 110v lines and run service around the entire layout with duplex outlets in the fascia. Outlet boxes at control stations have four receptacles.
Switch with red light at the staircase for layout shut down.
Be very careful with homes built in the mid seventies, many have aluminum wiring.
Be careful with some homes built in the first half of the last century. The 15 amp wiring is frequently hair thin undersized. Like having a toaster in the walls.
