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In the UK there are over 4,474 miles of overhead electricity lines providing power to Britain's homes. Using a model I demonstrate how the National grid works.
National Grid Web site www.nationalgridet.com/
The Power station generates AC electricity. If this low voltage is put over the grid much of the energy is lost, but if the electricity is converted by a step-up transformer then sent across the grid and then put into a step-down transformer then little electricity is wasted.
This is based on a kit by Irwin Science Education
www.irwinscienceeducation.com...
And using Hornby Pylons to improve the look.
We purchased this product and use it in our teaching.
Philip M Russell Ltd
Web: www.hemelprivatetuition.co.uk