Typical doorbell transformer in the panel. I rarely see this but can any one direct me to why or why not, in the NEC 2002, for this type of installation. Thanks Joe
Do you mean mounted in a 1/2" KO in the panel? (only the line voltage leads inside) Otherwise how are you separating the class 2 wiring from the line voltage?
thanks for responding, No mounted inside the panel. no separation, all romex install, the low-v wires go out in an opening in the panel, panel is an exterior installation
[This message has been edited by JoeMed (edited 06-02-2005).]
The short answer is Class 1, not current limited, treated virtually the same as "power" Class 2, low voltage, current limited, like your doorbell. Class 3, higher voltage, still current limited, like a phone line.