Pass electric lead twice across circuits (6)
I believe the answer is:
elapse
'pass' is the definition.
(I know that pass can be written as elapse)
'electric lead twice across circuits' is the wordplay.
'lead' says to take the initial letters.
'twice' says to double the letters.
'across' is an insertion indicator.
'circuits' becomes 'laps' ('lap' can be a synonym of 'circuit').
The first letter of 'electric' is 'e'.
'e' doubled is 'ee'.
'ee' placed around 'laps' is 'ELAPSE'.
(Other definitions for elapse that I've seen before include "Glide by" , "Tick by" , "Please (anag) -- pass away" , "(Of time) go by" , "Pass or expire - please" .)