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Power Distribution Line Modifications for ELF Mitigation
	Distribution line pole preassembled on the ground and being raised. Visible on the pole are the dual pole ground wires, the test box (mid-way along the pole), and the neutral isolator (below the transformer).
	Finishing the wiring for dual grounding at the base of the pole. Plastic molding is added on top of the insulated wire to provide double insulation and mechanical protection. The close nailing keeps the flexible molding from bowing out, which would expose the wire underneath.
	Burying ground wire to primary ground rod at base of pole. The secondary ground comprise one or two ground rods, 8-24 ft away from the pole and connected together. There is also a reference ground rod 50 ft away from the pole.
	Installing secondary ground rod using hammer-drill. Rod penetrating earth at an angle, because of buried and unknowable rock at the picked spot.
	Installing the reference ground rod 50 ft away from the pole, typically along the path of the drop.
	Burying connecting wire for the reference ground rod.
	Attempting to install ground rod at a very shallow angle in a rocky area.
	Trucking in top soil to build up grade around a pole in a rocky area where it is impossible to install ground rods.
	Adding top soil to build up grade is cost-effective to realize multigrounding systems in areas with surface rock. It is also effective in realizing ground planes around field structure, by first laying a grounding grid on the existing surface and then covering it with top soil.
	Pole riser with a bare concentric neutral wire. The ELF voltage on the concentric neutral wire is passed on to the metallic molding by contact, making the molding a safety hazard. Plastic moldings or conduits solve the problem.

Distribution Line Guy Wires
	Insulators in guy wires keep the ELF voltage on the line neutral from being carried to the lower portion of the guy, a cable that passersby can touch unsuspectedly.

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` Last updated: June 5, 1998.