Re: switch requirements
Depending where your jurisdiction is and what they have adopted, can make a big difference. In NYSate, the residential building code has specific references as to where the switch for lighting should be located. In other jurisdiction, that may be true also. The requirements are found in R303.3, .4, .4.1.
For other than dwellings, the Energy Conservation Construction Code has some relavent information about lighting and how it is controlled.
Our contractors meeting this month had a representative from WattStopper provide a presentation. He was well versed in the State requirements for both dwellings and other than dwellings. It was very informative and gave us a good idea of where things are heading. The guys from California probably have even more restrictions than NY.
Pierre