Make sure that the receptacle it's being used in is CERAMIC and rated for higher wattages (ie. heat). Most dome lights have ratings, pay attention to them: the ones
rated for lower wattages do not have ceramic bases, they have plastic with cardboard inside that can melt & burn. MUST USE CERAMIC type.
The only other thing that I can think of is if you have children, dogs or cats (or similar pets) running around, be SURE that none of them can trip on
the cord to the CHE (that could pull it down & allow it to contact something flammable). Just as you'd make sure that a space heater cannot be tipped
over...same idea. (that's why space heaters are so dangerous) It wouldn't hurt to attach the cord somehow, so it only reaches so far (& not the floor).