lightning rod

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lightning rod,

a rod made of materials, especially metals, that are good conductors of electricity, which is mounted on top of a building or other structure and attached to the ground by a cable. By virtue of its position, shape, and conductivity the rod attracts lightninglightning,
electrical discharge accompanied by thunder, commonly occurring during a thunderstorm. The discharge may take place between one part of a cloud and another part (intracloud), between one cloud and another (intercloud), between a cloud and the earth, or earth and
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 discharges much more readily than the building on which it is mounted. When struck, the connecting cable carries the discharge safely into the ground, preventing any damage to the building. Benjamin FranklinFranklin, Benjamin,
1706–90, American statesman, printer, scientist, and writer, b. Boston. The only American of the colonial period to earn a European reputation as a natural philosopher, he is best remembered in the United States as a patriot and diplomat.
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, in his kite experiment (1752), proved that lightning and electricity are identical and subsequently invented the lightning rod.

lightning rod

[′līt·niŋ ‚räd]
A metallic rod set up on an exposed elevation of a structure and connected to a low-resistance ground to intercept lightning discharges and to provide a direct conducting path to ground for them.

lightning conductor, lightning rod

lightning conductor
A metallic cable or rod, running from the highest point on the roof of a building (and insulated from it) to the ground; protects the building, should lightning strike, by providing a direct path to ground.

lightning rod

A rod-like electrical conductor attached to the highest exterior point of a building; provides a direct electrical path to the ground if lightning strikes the building, furnishing protection against lightning-induced damage; invented in 1752 by Benjamin Franklin, who established that lightning is an electrical phenomenon.
References in periodicals archive ?
Hunterdon County -- Porcelain fuses were replaced with modern polymer fuses, new transformers, lightning arrestors and animal guards were installed, and spacer devices were added to help keep wires separated on circuits serving Alexandria Township, Bethlehem Township, Califon Borough, Clinton, Clinton Township, Delaware Township, East Amwell Township, Flemington Borough, Glen Gardner Borough, Hampton Borough, High Bridge Borough, Holland Township, Kingwood Township, Lebanon Township, Raritan Township, Readington Township, Tewksbury Township and West Amwell Township.
Most important, AETI's Integrated Solar Inversion Station is completely pre-configured with all fuses, surge suppressors and lightning arrestors pre-tested - a critical feature that further promotes its reliability both short- and long-term and benefits construction crews by saving them time in the field," said Skibinski.
Installed 238 lightning arrestors, which prevent outages by protecting lines from voltage carried by lightning strikes.
Engineers are testing various compounds for lightning arrestors, terminations, splices, bushings and other high-voltage components.
Tenders are invited for Design, Manufacture,Testing and Supply of Lightning Arrestors Porcelin housed 60KV,10KA Normal Duty with surge Counter Discharge Class-II
About GIS Switchgear is a protection device and is a combination of different types of components such as circuit breakers, current transformers, potential transformers, lightning arrestors, protection relays, and disconnectors arranged in a logical manner.
The FAA-certified Micro 100 CCR is available with a range of optional extras, including a series circuit cut-out switch, lamp fault monitoring, insulation reading ability and output lightning arrestors.
Also on display will be a selection of wireless accessories, including NEMA rated enclosures, lightning arrestors and cable assemblies.
Flat and cast iron pipe Electrodes to various Equipements like Lightning arrestors CTs PTs and other equipments at 110/33/11kV S/S Bhalki Including Civil Works in Bidar distt.
html About Low Voltage Switchgear Low Voltage Switchgears are a combination of several components such as circuit breakers, lightning arrestors, current transformers, protection panels, and disconnectors.
The EXACTER([R]) Outage-Avoidance System provides early warning of failing switches, regulators, insulators, cutouts, lightning arrestors, and other equipment utilizing advanced sensor-array technology.
Tenders are invited for Repair Maintenance Of Certain Em Equipments Lightning Arrestors Aviation Lights Earthing Pits To Tech And Otm Accn And Fire Fighting Items At Af Stn Kumbhirgram