Planet with an electrical connection (5)
I believe the answer is:
earth
I believe this clue is a double definition.
'planet' is the first definition.
(Earth is an example)
'an electrical connection' is the second definition.
(I've seen this before)
'with' is the link.
(Other definitions for earth that I've seen before include "Connection between an electrical device and conductor" , "brownish pigment?" , "Make electrics safe" , "Lair; planet" , "Human world" .)