Electrical connection in lair (5)
I believe the answer is:
earth
I believe this clue is a double definition.
'electrical connection' is the first definition.
(I've seen this before)
'lair' is the second definition.
(thesaurus)
'in' is the link.
(Other definitions for earth that I've seen before include "Human world" , "dirt" , "Fox's burrow" , "Badger's burrow" , "Our favourite planet" .)