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Porcelain multi-part electrical insulator, ca. 1912

Contributed by Maine Historical Society

Porcelain multi-part electrical insulator, ca. 1912

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This insulator is constructed of three parts: the upper dome with the saddle at the top and the two conical skirts at the bottom.

Insulators such as this one were used on high-voltage transmission lines of up to 69,000 volts.

Insulators are necessary to keep the current from "leaking" out of the line.

The Locke Insulator Manufacturing Co. produced insulators of this style and glaze from 1909-1918.

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Other Information

  • Title: Porcelain multi-part electrical insulator, ca. 1912
  • Creator: Locke Insulator Manufacturing Co.
  • Creation Date: circa 1912
  • Subject Date: circa 1912
  • Media: Porcelain
  • Local Code: 2004.090.1327
  • Collection: Central Maine Power Company collection
  • Object Type: Physical Object

For more information about this item, contact:

Maine Historical Society
485 Congress Street, Portland, ME 04101
(207) 774-1822 x219

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LC Subject Headings

Central Maine Power Company
Electrical apparatus

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