GIANT SPARK PLUG FOR WAR POWER
CD 2478046 E&MP12.015
Electric Appliances & Apparatus
January 19, 1944
This 14-foot-long "spark plug" is part of a giant automatic switch that will guard flow of electric power into a new war plant in the Pacific Northwest.
Called a condenser bushing, the plug is shown being prepared for a test at the East Pittsburgh Works of the Westinghouse Electric & Manufacturing Company.
The bushing conducts 230,000 volts of electric power into the tank on which the workman is standing, just as a spark plug in our automobile conducts electricity into the gas-filled cylinder.
Inside the tank is a disconnecting device that shuts off the power in a twentieth of a second when a short circuit occurs.
More than 5,000 gallons of oil in the tank "drown" the blue-hot electric arc created by opening this switch.
The six-foot pile of porcelain "saucers" forming the upper half of the bushing prevents high voltage electricity from flashing over between the tank and the transmission line.
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GIANT "SPARK PLUG"
This 14-foot condenser bushing is part of a huge automatic switch that will guard flow of electric power into a new Westinghouse war plant.
The bushing conducts 230,000 volts of power into the tank on which the workman is standing, just as a spark plug in your automobile conducts electricity into the gas-filled cylinder.
Original Caption by Science Service