CHRIS KNAPTON / SCIENCE PHOTO LIBRARY CHRIS KNAPTON / SCIENCE PHOTO LIBRARY
Electricity pylon maintenance. View of several technicians during training on the maintenance of power lines. The cable carrying the electricity is suspended from a large insulator (vertical column) on an arm of a pylon (lower left). Pylons hold cables which carry electricity from power stations to sub-stations in cities and towns. The equipment must be in a good condition or efficiency may be lost. Power lines require constant servicing to keep them working correctly. The insulators prevent any electricity flowing through the metal pylon, which would be dangerous. Photographed at the National Grid training centre in Ekring, Nottinghamshire, England.
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