### Clue: Holder of lights and cable designed by artist (10)
### Answer: CANDELABRA 
 ### Explanation: Definition: Holder of lights
 **Anagram of**(… designed) AND CABLE **plus**(by) RA(post-nominal letters for a member of the Royal Academy of Arts, an artist).**
(On re-reading, I've just noticed that the answer is a plural noun, while the definition is singular.)