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Smithsonian Institution

no date - rings direct the flash away from the insulators, forming a luminous rope

SAFETY DEVICE

E&MP 72.069

Artificial Lightning

no date

... lightning is often troublesome on high-power tension lines.

Protective devices such as the rings shown here are effective in keeping any flash-over from lightning away from the glass or composition insulators.

The rings direct the flash away from the insulators, forming a luminous rope showing the path the current actually takes.

The forked streamers disappear the instant a path between the rings is completed.

171478 383

Original Caption by Science Service
Westinghouse



National Museum of American History

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