When installing 5kv or 15kv cable should the ground in the cable be grounded on one end or both. I thinking if grounded on one end at the source it would dissipate the induced voltage. If grounded on both ends it would perform in the same manner BUT, if there is a fault, lighting or serge it would try to use the drain wire in the cable as a ground and destroy the cable. Can some one explain the corect way for installing this cable