Which document is the UK national standard for the requirements of electrical installations that the 2391-52 inspector verifies against?
Statutory And Non Statutory Documents
Question · Easy
Which of the following is a STATUTORY document an inspector must work within?
Document an inspector must complete after periodic inspection and testing of existing fixed wiring, recording the results, the observations and the due date of the next inspection; in England's rented homes it is renewed at intervals not exceeding five years.
Documents and certification
Guess the Term
Introduction & Exam Overview
1.1 About the 2391-52 Exam
Study guide
Which IET publication contains the standard model forms and detailed guidance for inspection and testing, including the C1/C2/C3/FI classification table?
Read the clue and guess the term in 6 tries.
Game
Which part of BS 7671 deals specifically with inspection and testing?
Document with separate signature panels for design, construction and inspection and testing, issued for a new system or for an addition or alteration that introduces one or more new circuits; periodic inspections never get it.
The certification document issued on completion of a NEW installation, an addition or an alteration is the:
Certification Eic And Eicr
An Electrical Installation Certificate (EIC) must be accompanied by which two schedules?
Question · Medium
Short-form document an electrician issues for a small job that adds no new circuit; it is one of two possible records after repairs on an unsatisfactory periodic report, depending on what was done.
1.2 How to Use This Guide & Open-Book Exam Strategy
How many signatures (responsible persons) are required on a standard Electrical Installation Certificate for new work?
Swap tiles to line up three of the same term.
Term Match
A Minor Electrical Installation Works Certificate (MEIWC) is appropriate for:
___ and limitations: heading of Section D of a periodic report, which records the parts actually inspected and tested, the agreed limits with their reasons, and who agreed them.
Initial verification of a new installation must be carried out:
Initial Verification Requirements
Before any dead testing begins on an installation, the inspector must FIRST:
1989 statutory instrument that applies to all employed and self-employed persons and bans any activity on or so near a live conductor that danger may arise unless it is unreasonable for it to be dead.
Safety and legislation
Chapter 2: Statutory & Non-Statutory Documents
2.1 Statutory Documents
The correct sequence of DEAD tests during initial verification is:
Sequence Of Tests
Flip two cards at a time to find matching terms.
Term Pairs
Why must continuity of conductors be tested BEFORE the insulation resistance test?
Classification ___ attributed to every observation on a periodic report according to the degree of urgency, chosen by the inspector as an engineering judgement - C1 for danger present, C3 for improvement recommended.
Inspection of installations
Which test instrument is used to verify continuity of protective conductors?
Continuity Testing
The (R1 + R2) method of testing continuity of a final circuit measures:
___ inspection: what Regulation 643.7 pairs with testing when an RCD measure is verified, and the way a phase-sequence check is done - examining by eye that line conductors sit on the correct terminals.
2.2 Non-Statutory Documents
Before measuring resistances such as (R1 + R2) with a long test lead, the inspector should:
Find five hidden terms in a grid of letters.
Term Search
When testing a ring final circuit, the inspector first measures the end-to-end resistances r1, rn and r2. A correctly wired ring should show, at every socket, an (R1 + R2) reading that is:
Question · Hard
Item listed in the report notes alongside damage, deterioration and non-compliance; one observed in the distributor's equipment must be notified to the person ordering the report immediately and in writing.
In the three-step ring final circuit test, after the line and neutral end-to-end loops are cross-connected, the line-to-neutral reading measured at every socket-outlet should be approximately:
Main protective bonding conductors connecting incoming gas and water services to the main earthing terminal are checked during continuity testing to confirm they are:
Shock-protection unit with no overload role, rated at 30 mA or less where additional protection is required for socket-outlets up to 32 A; a general non-delay type counts as effective when it disconnects within 300 ms at its rated sensing level in an AC test.
Testing of installations
2.3 Roles, Responsibilities & the Statutory/Non-Statutory Relationship
For a standard 230/400 V installation, the insulation resistance test is applied at a DC test voltage of:
Insulation Resistance Testing
Trades Exam Prep Podcast
Listen on Spotify
Podcast
For a standard 230/400 V circuit, the minimum acceptable insulation resistance value to BS 7671 is:
Board-mounted unit combining an imbalance sensor and an overload element in one module - commonly one per final feed in homes - so leakage or overload clears that feed alone.
Before carrying out an insulation resistance test, sensitive electronic equipment and dimmer switches should be:
When insulation resistance testing a complete final circuit where it is impractical to disconnect every accessory, the inspector may connect line and neutral together and test:
Earth-fault ___ impedance: the impedance of the path through the source, the line conductor out to the fault and the protective conductor back, compared with Chapter 41 maximum values and obtainable by calculation as Ze plus R1+R2.
Chapter 3: Certification & Documentation
3.1 The Electrical Installation Certificate (EIC) & Schedules
Polarity testing on a final circuit during initial verification confirms that:
Polarity Testing
Polarity is initially confirmed during the DEAD test sequence by:
Kind of final circuit that leaves the consumer unit, runs through every socket-outlet and returns to the consumer unit; its continuity test starts with end-to-end readings of each conductor and finishes with cross-connected measurements at each point.
An Edison screw (ES) lampholder must have its OUTER (screw) contact connected to which conductor for correct polarity?
Loading more…