 Lightning protection is provided by bonding the multipoint ground grid to one or more grounding rods under or at the perimeter of the building, and then up to the lightning rods.If the building has significant metal framing elements, these should be bonded to the lightning rods and grounding rods as well.If the building has large motors, driving such things as fans, pumps, elevators, etc., these should also be on the multipoint grid.