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