Brian:

A lamp with a built in dimmer should not be dimmed by a dimming X-10 module. IF the dimmer on the lamp is turned up all the way, there might not be a problem except some "buzzing". However, if you have the lamp dimmed to 50% (for example) with the X-10 module, and someone walks up to the lamp and uses the dimmer on the lamp to dim the lamp more, the lamp could be damaged.

Robert
RCI Automation
rciautomation@compuserve.com
[Link: ourworld.compuserve.com]