Data and leakage circuits

Data and leakage circuits (© K.Brown 2025)

Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
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Across:

1. low voltage data and telecommunication systems are in a class of their own - compared to mains systems.
2. data cables are often wired in this cable system. One of several standards available.
7. used to transmit data, care to be used around these.
8. provides temporary mains power - but fill it up first.
9. mains voltage circuits are in a class of their own - compared to data circuits.
12. a brief interruption on a mains sine wave, very short duration.
13. found on mains ac circuits, caused by large inductive loads which should leave the waveform alone.

Down:

1. total loss of all systems.
3. unwanted interference on the mains, unexpected and unwanted.
4. found in pc power supplies and 'leak' current to earth.
5. provided temporary mains voltage for a short duration. Used for computer power back-up.
6. very efficient way to transmit data over great distances. Intrinsically safe!
10. interference on the mains supply. Can be heard on a radio.
11. An IT circuit would benefit from an earth conductor like this.
14. this will disconnect if too much IT is installed on the same circuit.