Electricity Technology

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Across
  1. 4. 33Kv and above
  2. 7. no2nd best network
  3. 8. oil, sf6 or vacuum
  4. 14. made of copper both primary and secondary
  5. 16. usualy made of iron
  6. 17. the company at the top
  7. 19. the best network
  8. 20. in the substaions
Down
  1. 1. one way from a to b
  2. 2. connects cables
  3. 3. where it all starts
  4. 5. another way from a to b
  5. 6. less than 33Kv
  6. 9. bigger than your cars sump
  7. 10. works at height
  8. 11. from 13A to 125A+
  9. 12. the gaffer
  10. 13. another name for Electricity North West
  11. 15. changes on demand
  12. 18. stepping up and down
  13. 21. not the best network