Can anyone point me to the electrical codes that apply to our train layouts, the low voltage ( <12v. ) systems. By 120v. standards not much of what we wire would pass, DCC, DC or AC. I have a copy of Practical Electrical Wiring, based on the 1981 Code, so some things have surely changed. For low voltage wiring the main points are: 1) Do not put high and low voltage wires in the same conduit or box. 2) The supply should be protected from over current situations, 3) Thinner insulation is OK, but should be protected from damage. Nothing about terminals, protective boxes, etc.
I just want to know how to stay safe.
said, I have seen bare 120volt terminals under layouts on
tour. I think they was OK, there was a label: "Danger, do not
touch." Also one where the 120volt lighting circuits looked
just like the track wires, you just had to follow them to
check what they were connected to. )