CROSSWORD 2C

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Across
  1. 2. Wire coded in green and yellow stripes
  2. 4. Potential that remains the same
  3. 6. Colour of live wire
  4. 10. Type of potential used in mains electricity
  5. 11. Wire that has a potential of 230V between it and the earth
  6. 12. Number of wires normally in an appliance's cable
Down
  1. 1. Has occurred when the earth wire carries a current
  2. 3. Unit of frequency
  3. 5. Must not occur between live and earth wire
  4. 7. Wire that completes the appliance's circuit
  5. 8. Use of the earth wire
  6. 9. Colour of the neutral wire