Mike, you want to use two-stage protection. First, purchase a quality primary building entrance terminal (3M, Circa Telecom and Emerson Network Power-formerly Reltec) and equip it with gas tube modules at a minimum. If your budget will allow, go for solid state modules (4C1S type). It at all possible, place these terminals outside or immediately where the cable enters the building. If you can, try to have about 25 feet of inside wire between it and your system or distribution field location.

Then, provide secondary protectors, such as Porta Systems or ITW Linx units. These should get you covered.

Don't forget that you must use #6 for grounding the primary protector to the building electrical ground, not just a water pipe or your own ground rod. Lastly, make sure that the cable sheath is bonded with the proper sheath clamps.

Ed Vaughn, MBSWWYPBX