For fun, I'd like to point out, no matter how clever you think you are, things still go wrong. At AGHR we have TVS's , PSX-ACs, chokes, surge protectors everywhere and a very fine fine tuned layout.
Yet somehow last year the city came and put the transformer on the pole in backwards outside our clubhouse for a few minutes... and we had 750V rms on all our outlets. It was intense, I think we had over 200V on the layout, and the lighting fixtures all blew out. The only thing that survived was GRJ's booster circuit somehow.
Enjoy 16 seconds of video of our train club melting down.