Safe isolation (easier) by Mike Lawrie

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Across
  1. 6. The number of three phase tests
  2. 7. What the isolation process is called
  3. 8. Tells others about safe isolation
  4. 9. Fits onto main switch or circuit breaker
  5. 10. The number of single phase tests
Down
  1. 1. Keeps public away form area
  2. 2. What is switched off if only one circuit isolated
  3. 3. What is used to prove the test equipment
  4. 4. The red switch most often switched off for isolation
  5. 5. Makes isolation secure