If you have a lot of artwork in the house and several tracks

mounted to one dimmer have your professional electrician

install a heavier rated dimmer, because the electricity will

put heat and stress on the dimmer leading it to a

quick burn-out. One dimmer per room is sufficient. When

you start using too many dimmers in the same room some

paintings will become brighter while others will fade into the

background.  The idea with lights is to create an

overall ambiance... for the viewing of artworks.