Across
- 2. I would connect cables in on of these boxes
- 5. The name for the unit where I could isolate all supplies
- 6. Minimum fuse size for a central heating control system
- 7. Part of a battery
- 12. Test to ensure that the conductors have not been crossed
- 13. The first two words in EMF
- 14. I could use this kind of continuity bond
- 15. With DC these flow in one direction only
- 16. Test to ensure that all appliances are earthed
- 17. Power is measured in these units
- 20. One way of producing electricity
- 21. Immersion heater flex should be heat ---------
- 22. Maximum meters squared floor area for a ring main
Down
- 1. fitted to the outside of bare wires
- 3. Used to measure ohms
- 4. Type of fuse
- 8. Colour code for live
- 9. Current flowing back and forth
- 10. Lighting circuits are protected with MCBs of this amp rating
- 11. Older type of fuse
- 16. Usually fitted to pumps to help start the motor
- 18. Minimum fuse size for a 3KW immersion heater
- 19. Colour code for neutral