TYPICAL RESIDENTIAL LIGHTNING PROTECTION SYSTEM
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Design Rules: Space rods evenly, no more than 20 feet apart. End rods should be no more than than 2 feet from the end (1 foot is typical). Fasten cable every 3 feet. Connect vents and antennas with clamp or lug if within 6 feet of the lightning cable. For a neat job run the down cables next to or behind down spouts, molding, etc. and connect to ground rods (make connections to ground rods or ground plates below ground).