Hey Folks, I've just starting to put together an NCE DCC system using a "Tony's" 18 volt transformer to power it. The book makes no mention of using any circuit breaker on this portion of the circuit. I'm using the traditional 1156 lamps on each module of the layout in order to isolate any short in the track. Anyone have any thought on protecting the power wires from the transformer? Should it be on the primary or secondary of the transformer, and how about the trip amps?