Can anyone explain or identify the exact threshold when installing home automation equipment? That is, how far can a non-licensed electrical contractor(installing "low-voltage" HA equipment) go until he can get into trouble? For example, when installing a flush mounted x-10 dimmer module into the existing 120V circuit. Or, for another, powering a controller beside the service panel. I have 12 years experience as an electrician and was recently grandfathered to a Master electrician. Also, I am in the process of preparing to take my electrical contractors test, but it will be a few months--not to mention if I even pass. I have recently established a business for installing Smart Home equipment and would like to continue working. Any advice/help appreciated...