Free mock exam
Free Level 2 Mock Exam: Installation Theory (Unit 3)
Free mock exam for Level 2 Electrical apprentices on Unit 203 (Electrical Installation Theory). 30 questions from a 420-question bank covering cable types (twin and earth, SWA, MICC), conduit and trunking systems, accessories, joints and terminations, and BS 7671 cable selection principles.
- Questions
- 30
- Time limit
- 35 min
- Pass mark
- 70% · 21/30
- Question bank
- 420
Free, no sign-up. Retake as many times as you like — different questions each time.
Sample questions
01What is the most common type of cable used for fixed domestic wiring in the UK?
- ACoaxial cable
- BTwin and earth cable
- CThree-core flexible cord
- DSingle core cables
Why: Twin and earth cable (flat PVC) is the most commonly used cable for fixed domestic installations in the UK due to its ease of installation and cost-effectiveness.
02What does 'PVC' stand for in cable terminology?
- AProtected Vinyl Covering
- BPolymer Vinyl Compound
- CPlastic Vinyl Cable
- DPolyvinyl Chloride
Why: PVC stands for Polyvinyl Chloride, which is a thermoplastic polymer commonly used as insulation and sheathing material for electrical cables.
03In a twin and earth cable, what is the bare conductor used for?
- ALine (L)
- BEarth (CPC)
- CNeutral (N)
- DSwitch wire (SL)
Why: The bare conductor in twin and earth cable is the circuit protective conductor (CPC) or earth conductor, providing a path to earth for fault protection.
Common questions
Is the Level 2 : Installation Theory 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.