EV C&G January Paper 1

1. Which statutory document relates to installing EVSE that will encroach onto a public highway?

2. Which IET Guidance Note includes detailed guidance on requirements for the selection and erection of electrical equipment?

3. How could Mode 3 EVSE be described?

4. Which Mode of EV charging uses a DC output from a charging point?

5. What type of vehicle connector is show in the image?

6. Which statement describes a Case C electric vehicle charging connection?

7. Which types of EV socket-outlet can be fitted into an EV charging pillar which contains more than one socket-outlet?

8. An open PEN detection device has detected that the voltage has exceeded 70 V rms between a cpc and Earth.

What is the maximum disconnection time to be in conformity with BS 7671?

What device is required to be incorporated into a BS EN 60309-2 socket-outlet to prevent unauthorised disconnection when the contacts are live?

10. Which of the following would not feature in wireless communication with an EV charging module?

11. An electric vehicle, that is to be used as an energy storage system, capable of generating 20 A is to be connected in parallel with the grid supply.

What ENA Engineering Recommendation will be used when notifying the DNO?

12. EV charging equipment, which will be accessible to the public, is to be wholly mounted above 0.9 m from the ground within an office car park.

What is the minimum acceptable degree of impact protection for this EV charging equipment?

13. A charging pillar incorporating multiple charging points is to be installed outside a commercial premises, where two vehicles may be charged in a dual parking bay.

Which would be the most  appropriate location for the charging pillar, as indicated by the CP symbol below?

14. EVSE is to be installed in a commercial premises that already has an emergency lighting system. This system is to be extended to provide lighting at the EV charging point.

Which British standard must the new emergency light conform to?

15. An EV charge point is to be located outside an office and connected to the mobile phone network. The charge point will be available for the public to use.

Which must be checked in relation to this charge point?

16. Which two earthing systems have the risk of diverted neutral currents in the event of an open PEN conductor fault?

17. The image shows an EV charging point, on its own TT earth system, which would be simultaneously accessible from an outside tap bonded to the TN-C-S installation within a dwelling.

What would be the risk of someone touching the tap and vehicle at the same time?

18. A 230V radial circuit, without load curtailment measures, is to be used to supply an EV charging pillar that contains two 3 68 kW Mode 3 socket-outlets.

What is the design current I_b of this circuit?

19. Which of the following circumstances would requires the installation of an AFDD at the origin of the circuit?

20. Where must an isolator in an EV charging equipment circuit be positioned?

21. What is the minimum degree of protection for the accessible top surface of an EV charger unit mounted inside a garage?

22. What is the minimum required spacing in front of an accessible public EV charging point?

23. A test of earth electrode resistance is to be carried out.

Which is an advantage of using Test Method E3 instead of Test Method E2

24. Automatic disconnection of the supply is to be verified for the EV charger circuit which forms part of a PEI that contains V2G EVSE in connected mode.

What is the recommended method to determine earth fault loop impedance for this circuit?

25. What does not need to be demonstrated to the client during the handover of EVSE?

26. Which documents are to be handed to the client following the successful initial verification of a new EV circuit?

27. A single point of isolation is to be provided at the origin of a single-phase dwelling.

Which of the conductors must be isolated, by the device, to remove power from the entire installation?

28. Which best describes V2X service that uses an EV battery to supply power, via an inverter, to an installation during a power-cut?

29. What information does not have to be included in documents, given to the client during handover, for V2X system that is capable of island mode operation?

30. Throttling of the charger is given in the IET Code of Practise for Electrical Vehicle Charging Equipment Installation as part of a function of smart charging.

Which function of smart charging is this included within?