A 2020 training handout lists five ways, (i) to (v), to use a PME earthing facility for an outdoor charging point. How many of those can a design use under BS 7671:2018+A4:2026?

Four, (b) to (e), as (a) is deleted

All five, now lettered (a) to (e)

Three, as (d) is now for DC units only

One, as only the earth electrode is left

An EV that can supply power back is to charge in a prosumer’s electrical installation with PV and a battery. Under Chapter 82, what must manage its charging equipment?

The electrical energy management system

The DNO’s own export limiting scheme

The charge point’s internal RCD on its own

The PV inverter, as the main source of energy

A data sheet says the unit’s open-PEN protection meets 722.411.4.1 method (c). What should that device be monitoring?

CPC-to-Earth voltage, off within 5 s above 70 V

Line-to-neutral voltage, tripping outside 207 to 253 V

CPC-to-neutral voltage, tripping above 50 V RMS

Residual current, tripping at 30 mA or above

Free mock exam

General electrical requirements — EV Charging Installation Practice

Free topic-focused mock exam: 25 random questions from a pool of 72 on General electrical requirements, drawn from the wider EV Charging Installation bank. 50-minute timer, 60% to pass, worked explanation on every question. Use this when you've taken the full mock once and want to drill the topics you got wrong.

Questions: 25
Time limit: 50 min
Pass mark: 60% · 15/25
Question bank: 72

Free, no sign-up. Retake as many times as you like — different questions each time.

Sample questions

01A 2020 training handout lists five ways, (i) to (v), to use a PME earthing facility for an outdoor charging point. How many of those can a design use under BS 7671:2018+A4:2026?
- AThree, as (d) is now for DC units only
- BAll five, now lettered (a) to (e)
- CFour, (b) to (e), as (a) is deleted
- DOne, as only the earth electrode is left
Why: In the current text 722.411.4.1(a) reads "Deleted by BS 7671:2018+A2:2022", followed by (b) installation earth electrode, (c) CPC-to-Earth voltage device, (d) line-to-neutral voltage device and (e) alternative device. Relettering all five is tempting, but the old balanced three-phase method can no longer be used.
02An EV that can supply power back is to charge in a prosumer’s electrical installation with PV and a battery. Under Chapter 82, what must manage its charging equipment?
- AThe electrical energy management system
- BThe PV inverter, as the main source of energy
- CThe charge point’s internal RCD on its own
- DThe DNO’s own export limiting scheme
Why: Regulation 826.5 says an EV capable of operating as a prosumer is a particular case of a load and local storage unit, and its charging equipment (see Section 722) shall be managed by the EEMS as defined in 825.1. Export limitation, the RCD and the inverter all have their own jobs but are not what 826.5 names.
03A data sheet says the unit’s open-PEN protection meets 722.411.4.1 method (c). What should that device be monitoring?
- ACPC-to-Earth voltage, off within 5 s above 70 V
- BLine-to-neutral voltage, tripping outside 207 to 253 V
- CResidual current, tripping at 30 mA or above
- DCPC-to-neutral voltage, tripping above 50 V RMS
Why: Method (c) watches the voltage between the circuit protective conductor and Earth and disconnects within 5 s above 70 V RMS. The line-to-neutral device is method (d). Annex A722.4 says measuring the CPC against neutral does not give equivalent safety, and residual current is the RCD’s job.

Common questions

Is the General electrical requirements mock exam free?

Yes, it is free with no sign-up needed. Questions are pulled at random from a substantial bank, with a worked explanation on every question after you submit.

Can I retake the mock exam?

Yes. Every attempt picks a different random selection and reshuffles the options, so each retake gives you genuinely new questions. No limit on retakes.

Does this count as a qualification?

No. This is independent practice material and does not award a qualification, card or certificate. Where a subject has a formal qualification or card, you gain it through an approved provider.