Telegraph and Power Transmission Insulators
Suspended wires for electric power transmission are bare, except where they enter buildings, and are insulated by the surrounding air. Insulating supports called insulators are required at the points at which they are supported by utility poles or transmission towers. Insulators are also required where the wire enters buildings or electrical devices, such as transformers or circuit breakers, to insulate the wire from the case. These hollow insulators with a conductor inside them are called bushings.
Read more about this topic: Insulator (electricity)
Famous quotes containing the word power:
“We have imagined ourselves a special creation, set apart from other humans. In the last twentieth century, we see that our poverty is as absolute as that of the poorest nations. We have attempted to deny the human condition in our quest for power after power. It would be well for us to rejoin the human race, to accept our essential poverty as a gift, and to share our material wealth with those in need.”
—Robert Neelly Bellah (20th century)