Periodic inspection and 2391 readiness
Testing & Inspection · Full course section in Plus
An inspection plan defines the extent and agreed limitations, then adapts to operational restrictions encountered on site. A limitation records what was not established; it cannot turn an unchecked item into a satisfactory result or hide a known danger.
Inspection and testing provide complementary evidence. Results need circuit identification, appropriate instruments and a method suited to the conditions. Unexpected or conflicting evidence needs investigation rather than selecting the most convenient number.
C1, C2, C3 and FI communicate different significance. The overall report outcome must follow the evidence and applicable assessment criteria. A practice result is not authority to sign reports or a substitute for the relevant experience and competence.
The 2391-52 readiness unit sits inside Testing & Inspection. Its separate mock uses 60 original questions in 120 minutes, open book, with a 75% practice threshold. The pool is held out of ordinary lessons. The official qualification also has a practical assignment and centre entry requirements.
After reviewing the foundations, try the 2391-52 practice mock to identify revision priorities.
Separate practice performance from qualification
Updated
What to understand before practising
The 2391-52 handbook describes both a knowledge test and a practical assignment, with prior skills and experience expected. A timed app mock develops revision habits; it cannot replace the assessment centre’s entry judgement or practical evidence.
Sources
- City & Guilds: 2391-52 handbook, April 2026 — The 60-question, 120-minute open-book knowledge assessment, approximate 75% threshold, practical assignment and entry expectations.
This guide is free to read. There is no public quiz specifically for this topic yet. Explore the key terms below without leaving the page.
Common questions
- Can I try Periodic inspection and 2391 readiness free on this page?
- This guide is free to read, but there is no public quiz specifically for this topic on this page. Browse public practice samples for other subjects, or create an account for the learning path. The full course section requires Plus.
- Is a periodic report a guarantee against future faults?
- No. It describes the assessment made within its recorded extent and limitations. Conditions can change and defects can develop later.
- Is 75% here a guaranteed official pass?
- No. It is our fixed practice threshold. The official threshold is approximately 75% and may be adjusted; confirm arrangements with the centre.
Explore key terms
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EICRElectrical Installation Condition Report
The report produced by a periodic inspection of an existing installation, recording its condition against the current edition of BS 7671. Observations are classified by urgency — C1 for danger present, C2 for potentially dangerous, C3 for improvement recommended, and FI where further investigation is needed — and a C1 or C2 makes the report unsatisfactory.
Read the full EICR glossary entryContinuity testing
Low-resistance testing used to check that an intended conducting path is continuous. It includes checks on protective conductors, bonding conductors and ring-final conductors. It is carried out with the relevant circuit safely isolated. Lead resistance and unintended parallel paths can affect readings, so results must be interpreted against the actual connections rather than treated as proof of the whole installation's safety.
Read the full Continuity testing glossary entry