Which UK statutory regulation primary places a legal duty on employers, self-employed persons, and employees to ensure electrical systems are designed, constructed, maintained, and tested safely?
Bs 7671 18th Edition Wiring Regulations
Question · Easy
EAWR 1989 vs BS 7671 — which one is law?
Health and Safety
Flashcard
According to BS 7671, what is the primary purpose of Initial Verification on a new electrical installation?
Chapter 1: Qualification Overview & Regulatory Framework
1.1 EAL Level 3 Qualification Structure & Examination Specifications
Study guide
Cheat sheet
Under BS 7671 Regulation 643.1, in what sequence must inspection and testing be conducted during Initial Verification?
Trades Exam Prep Podcast
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Podcast
What is the 'prove-test-prove' sequence in safe isolation?
Under BS 7671, what maximum disconnection time is specified for a 230V final circuit not exceeding 32A in a TN system?
In a TT earthing system, what protective device is generally required to achieve automatic disconnection of supply for final circuits due to high earth fault loop impedance?
Why must an isolated circuit be secured, not just switched off?
Which earthing system uses a combined neutral and protective conductor (PEN) throughout the supply distribution system up to the consumer unit main terminals?
Question · Medium
1.2 Statutory Framework & Electricity at Work Regulations 1989
What is the minimum cross-sectional area required for a copper main protective bonding conductor in an installation connected to a TN-C-S (PME) supply with a neutral supply conductor of 25mm²?
Why does GS38 say to use a test lamp or two-pole voltage detector, not a multimeter, to check for voltage?
According to BS 7671 18th Edition Amendment 2, which type of RCD is generally restricted from being specified for general socket-outlet circuits where equipment containing electronic components is installed?
Under Regulation 411.3.3, additional protection by means of a 30mA RCD is mandatory for socket-outlets rated up to what maximum current in general commercial installations?
What changed in BS 7671 on 15 April 2026, and until when does the previous edition remain valid?
Requirements for Inspecting and Testing
What IP rating is required as a minimum for accessible top surfaces of electrical enclosures containing live parts according to BS 7671?
1.3 Non-Statutory Standards: BS 7671:2018+A4:2026 and IET Guidance Note 3
Which document published by the IET provides detailed practical procedural guidance on carrying out initial verification and periodic inspection of electrical installations in the UK?
Which IET Guidance Note covers inspection and testing, and what edition is current?
When evaluating an existing electrical installation, what factor determines whether an older installation complying with a previous edition of BS 7671 requires upgrading?
An inspector encounters a SELV (Separated Extra-Low Voltage) circuit. Which fundamental feature distinguishes SELV from PELV (Protective Extra-Low Voltage)?
Question · Hard
When is an Electrical Installation Certificate (EIC) issued?
Under BS 7671 Regulation 411.3.1.2, which of the following is required to be connected to the main earthing terminal by main protective bonding conductors in every installation?
Chapter 2: Health, Safety & Safe Isolation Procedures
2.1 Safe Isolation Principles & Step-by-Step Procedure
What is the maximum permitted nominal supply voltage variation in the UK under the Electricity Safety, Quality and Continuity Regulations 2002 (ESQCR)?
When is a Minor Electrical Installation Works Certificate (MEIWC) appropriate instead of an EIC?
Before switching anything off, what should be done first when beginning a safe isolation procedure on a 230V single-phase circuit?
Safe Isolation Procedures
Why are multi-meters with selectable function dials NOT recommended by HSE Guidance Note GS38 for verifying safe isolation?
What do the Schedule of Inspections and the Schedule of Test Results each record?
What device must be used immediately before and after testing a circuit for the absence of voltage during safe isolation?
2.2 Test Equipment Safety & HSE Guidance Note GS38
Who should retain key control of the unique padlock used to lock off an isolation device during electrical work?
Who can sign the three roles on an EIC?
When testing a 3-phase and neutral 400V supply to prove dead during safe isolation, how many individual voltage tests must be performed between terminals?
If an isolating switch cannot be physically locked off with a padlock, what additional safety measure must be implemented under safe isolation guidelines?
What's the core difference in purpose between an EIC and an EICR?
Under HSE Guidance Note GS38, what is the maximum permissible length of exposed metal tip on a voltage indicator probe for general electrical testing?
2.3 Live Working Precautions, Risk Assessment & PPE
What specific hazard occurs if an electrician attempts to test for voltage using a neon test screwdriver?
What is the 'extent' and 'agreed limitations' of an EICR?
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