Patent ID: 8481851

Claim:
An apparatus, comprising: a first down-conductor cable having a first and second end and adapted to conductively attach to an adjustable-length air terminal approximate to the first end of the first down-conductor cable; a cable reel attached to the first down-conductor cable approximate to the second end of the first down-conductor cable, the cable reel configured to spool and unspool the first down-conductor cable in response to movement of the adjustable-length air terminal; a conductive clamp positioned along the first down-conductor cable between the first end of the first down-conductor and the cable reel, the clamp configured to allow movement of the first down-conductor cable during spooling and unspooling, and also configured to establish a high-current-capable electrical contact with the first down-conductor cable; and a second down-conductor cable conductively attached to the clamp approximate to a first end of the second down-conductor cable, the second down-conductor cable adapted to conductively attach to an electrical ground plane approximate to a second end of the second down conductor, wherein a high-current-capable grounding path from the first end of the first down-conductor cable passes through the clamp to the second end of the second down-conductor cable as a low-impedance path when the second end of the second down-conductor cable is attached to the electrical ground plane.