Did we ever answer the question about the 10 lamp holders, each on a snap switch and all connected to a single 20a circuit. You will have 11 current carrying conductors in the pipe but it is clear they can never overheat since total current is limited to 20a.
If 15A happens to be enough to supply the load, you could put it all on a 15A circuit, and you'll be good to go. You can have up to 20 #12's in one pipe, if they are derated to 15A.
[This message has been edited by SolarPowered (edited 02-07-2007).]
