Across
- 4. the maximum current a device will carry before operating
- 5. a means of safely cutting off the electrical supply
- 7. a current that could cause an MCB to operate if there is nothing wrong
- 8. device used to protect against overload and short circuits
- 9. switching in the event of an accident
- 10. B,C,D are all ? of circuit breaker
Down
- 1. known as a BS 3036 fuse
- 2. a fault of negligible impedance between live conductors
- 3. the minimum current that will cause effective operation of a device
- 6. protection given by the thermal operation of an MCB