Free mock exam
Modes, connectors and smart charging — EV Charging Installation Practice
Free topic-focused mock exam: all 30 questions on Modes, connectors and smart charging, drawn from the wider EV Charging Installation bank. 35-minute timer, 70% 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
- 30
- Time limit
- 35 min
- Pass mark
- 70% · 21/30
- Question bank
- 30
Free, no sign-up. Retake as many times as you like — the questions are reshuffled, with the answer order changed.
Sample questions
01For Mode 1 charging, what is the most the standardised socket-outlet at the supply end may be rated at?
- A32 A
- B63 A
- C16 A
- D13 A
Why: Mode 1 uses a standardised socket-outlet rated at no more than 16 A, with only line, neutral and protective earth to the car. 32 A is the limit for Mode 2, which adds the in-cable control box. 13 A is the usual UK socket-outlet rating, not the Mode 1 limit, and 63 A belongs to the Type 2 accessory ratings.
02The control box built into a Mode 2 lead is a product in its own right. What is it, and which standard covers it?
- AAn IC-CPD, covered by IEC 62752
- BA Mode 3 controller, to IEC 61851-1
- CAn EV socket, to BS EN IEC 62196-2
- DAn RDC-DD, made to BS IEC 62955
Why: The in-cable control and protection box is an IC-CPD, covered by IEC 62752 rather than IEC 61851-1. An RDC-DD to BS IEC 62955 is a device for DC fault detection, which is the tempting mix-up because both deal with protection. BS EN IEC 62196-2 covers plugs and socket-outlets, not the box.
03A customer says the 22 kW AC unit at work must be Mode 4 because it charges so quickly. What is the accurate reply?
- AMode 1, because the car does its own conversion
- BMode 4, because anything over 11 kW counts as rapid
- CMode 3, as Mode 4 means an off-board DC charger
- DMode 2, because three-phase leads carry a control box
Why: Mode is not about speed. A three-phase AC unit with the control pilot in fixed equipment is Mode 3, and the car converts the AC with its on-board charger. Mode 4 means an off-board charger supplying DC, whatever its power. The car converts AC in Modes 1, 2 and 3, so that does not make a unit Mode 1.
Common questions
Is the Modes, connectors and smart charging 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.