Current carrier (4)
I believe the answer is:
wire
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">current carrier</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for wire that I've seen before include "See 2" , "Thin drawn metal" , "Thin strip of metal, may be barbed" , "Strand of metal" , "Telegram about the fencing material" .)