Prize draw for electrical quizzes

Terms & Conditions | Winners

Terms & Conditions:

  1. The prize draw for each electrical quiz is open to all UK residents aged 18 or over who email, to quiz@esc.org.uk, an answer to an electrical quiz by the closing date for entries for that particular quiz. The closing date for each quiz will be given in the issue Switched On magazine in which the quiz is published.

  2. No purchase is necessary.

  3. Entry to the draw is automatically registered on receipt of an email giving the correct answer to the quiz.

  4. Only one prize per entrant.

  5. Persons and their families connected with the Electrical Safety Council and its subsidiaries or the draw sponsor
    (if any) are not eligible to participate in the prize draw.

  6. Winners will be selected at random within ten working days of the closing date for the quiz.

  7. The winners will be notified of their prize by email sent on the day of the draw.

  8. The winners must claim their prize within 30 days of each draw, by emailing their full name, company
    (if appropriate), and full delivery address for the prize. Unclaimed prizes will be void.

  9. Details of each winner will be published on the 'winners’ page' on the Electrical Safety Council website following receipt of their claim.

  10. No correspondence will be entered into. The decision of the Electrical Safety Council is final.

  11. The Electrical Safety Council accepts no responsibility for entries lost, damaged, delayed or unreadable. Proof of sending is not proof of receipt.

  12. The prizes cannot be redeemed for cash or any other prize.

  13. If the advertised prize is no longer available at the time of awarding the prize, the Electrical Safety Council has the right to substitute a prize of equal or greater value.

  14. The Electrical Safety Council reserves the right to cancel the prize draw at any stage if deemed necessary in its opinion, or if circumstances arise beyond its control.

  15. Any enquiry concerning this draw or the winners’ details should be directed to the Director of the Charity,
    The Electrical Safety Council, 18 Buckingham Gate, London SW1E 6LB.

  16. By submitting personal data to the Electrical Safety Council, you consent to the Electrical Safety Council’s use of that data for the purposes of the prize draw. All personal data supplied to the Electrical Safety Council shall be kept secure and confidential and shall be used by the Electrical Safety Council only in connection with the prize draw.

Spring quiz winners

Thanks to all of you who entered the spring prize draw. Sorry for the delay in posting the answers and details of the winners. Here are the correct answers to the final, ‘extremely high potential’, quiz:

  1. Take the maximum current rating of a Powertrack System: BS 7671, Definitions Part 2, page 27 = 63 Amperes
  2. Multiply this by the minimum height (in metres) recommended for a visual alarm in a fire detection/alarm system: BS 5839 = 2.1 m
  3. Add the result to the minimum gross area (m2) where emergency lighting is normally required in toilet facilities: BS 5266 = 8 m2
  4. Subtract the maximum earth resistance of independent earth electrodes associated with the local earthing of the star point of low voltage generating plant: BS 7430 = 20 Ω
  5. Add to the sum of the preferred ratings for fuses for use in BS 1363 fused plugs: 3 A and 13 A = 16 A
  6. Subtract the minimum cross sectional area (in mm2) for a flexible cord for a caravan connection where the rated current is expected to be 100 A: BS 7671, Section 721, page 213 = 35 mm2
  7. Add to the sum of the year that Michael Faraday discovered that many materials exhibit a weak repulsion from a magnetic field (a phenomenon he named diamagnetism)) and the denomination of currency (pounds) on which Faraday’s picture appeared on the reverse side: 1845 + 20 = 1865
  8. Multiply by the maximum number of minutes that is recommended following the occurrence of a fault or failure (causing disconnection of the normal power supply) in a grade C fire alarm/detection system, before visual indication at the control and indicating equipment occurs: BS 5839 = 30 mins
  9. Add the maximum time (in seconds) an automatic supply should be available for a safety service supply classified as ‘medium break’: BS 7671, Regulation 560.4.1, page 152 = 15 s
  10. Divide by the minimum value for the colour rendering index Ra for emergency escape route lighting: BS 5266 = 40
  11. Subtract the current that would cause automatic disconnection of a 100 A BS 88-2.2 or BS 88-6 fuse in 0.2 seconds: BS 7671, Appendix 3, page 284 = 1150 A
  12. Finally, multiply by the factor to be applied to a thermosetting cable (90˚C) where the ambient air temperature of the installed cable is 75˚C: BS 7671, Appendix 4, table 4B1, page 267 = 0.50

Answer = 162.55

The first person selected at random from the correct entries was:

  • Tim Larsen, South Shields, Tyne and Wear

The next three persons selected at random from the correct entries were:

  • Mike Bone, Rye, East Sussex
  • Ian Peadon, Bishop Auckland, County Durham
  • Mike Hillsley, Mansfield, Nottinghamshire
  • (One prize was unclaimed)

Congratulations to all the lucky winners, who have been sent their prizes.