What is the maximum DC voltage typically used in current rapid charging systems?

Modern rapid and ultra-rapid DC chargers commonly operate at up to 1000V DC to deliver high power, with 400V and 800V being typical vehicle battery architectures.

Which type of connector is standard for Type 2 AC charging in the UK?

The Mennekes (Type 2) connector is the European and UK standard for AC charging, defined in the BS EN 62196 series.

What is the minimum copper cable cross-sectional area typically used for a 32A EV charging point on a domestic radial circuit?

6mm² copper is typically selected for a 32A EV charge point so the current-carrying capacity and voltage drop requirements of BS 7671 are met for the installation method and route length.

Free mock exam

EV Charging Installation Mock Exam

Free EV charging mock exam — ideal practice for EV charger installation qualifications like C&G 2921-31. 25 questions from a 150-question bank covering charge point types and connectors (Type 2 AC and rapid DC), electrical design of domestic 7kW installations, earthing and protection including protective conductor monitoring, smart charging and back-office communication protocols, plus testing and compliance with BS 7671.

Questions: 30
Time limit: 35 min
Pass mark: 70% · 21/30
Question bank: 150

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

Sample questions

01What is the maximum DC voltage typically used in current rapid charging systems?
- A800V
- B1200V
- C1000V
- D400V
Why: Modern rapid and ultra-rapid DC chargers commonly operate at up to 1000V DC to deliver high power, with 400V and 800V being typical vehicle battery architectures.
02Which type of connector is standard for Type 2 AC charging in the UK?
- AMennekes
- BCCS
- CTesla Supercharger
- DCHAdeMO
Why: The Mennekes (Type 2) connector is the European and UK standard for AC charging, defined in the BS EN 62196 series.
03What is the minimum copper cable cross-sectional area typically used for a 32A EV charging point on a domestic radial circuit?
- A2.5mm²
- B4mm²
- C10mm²
- D6mm²
Why: 6mm² copper is typically selected for a 32A EV charge point so the current-carrying capacity and voltage drop requirements of BS 7671 are met for the installation method and route length.

Common questions

Is the EV Charging Installation mock exam free?

Yes — 100% free, 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 towards the real qualification?

No — this is independent practice material. To gain the actual qualification you need to sit the official assessment through an approved provider.