When carrying out safe isolation, what must you do FIRST with your voltage indicator before you use it to prove a circuit dead?
Safe Isolation
Question · Easy
A voltage indicator used for safe isolation should comply with which HSE guidance note?
The possibility, however slight, that a hazard will actually injure someone.
Safe isolation
Guess the Term
Chapter 1: Safe Isolation & Risk Assessment
1.1 Safe Isolation Procedure & GS38 Standards
Study guide
According to GS38, what is the recommended maximum exposed metal tip length on a voltage indicator probe?
Question · Medium
Read the clue and guess the term in 6 tries.
Game
During safe isolation of a single-phase final circuit, between which points must you test to confirm the circuit is dead?
To ___ off: secure an operated isolator in the OFF position, preferably with a safety device that has a unique key or combination.
What is the primary purpose of applying a padlock and unique key to an isolated main switch during work?
After proving a circuit dead with your voltage indicator, what should you do next to validate the result?
Verb completing '___ dead' in safe isolation, also used for checking a voltage indicator on a test unit before and after use.
1.2 Site Risk Assessment & Control Hierarchy
Which legislation places a duty on electricians to ensure conductors are made dead and kept dead while work is carried out, where reasonably practicable?
Health And Safety
Swap tiles to line up three of the same term.
Term Match
Under RIDDOR, which of the following must an employer report to the HSE?
A sign fitted to an isolator after lock-off to warn others that the circuit must not be re-energised.
What is the correct first step in a risk assessment before starting work in the AM2 installation area?
In the hierarchy of control, which measure should always be considered FIRST?
The law requiring employers and others in charge of work premises to notify the enforcing authority and keep records of work-related deaths and harm, diagnosed occupational illness and certain near-miss events.
Site safety
1.3 Single-Phase, Three-Phase & Distribution Board Isolation
Which document sets out the step-by-step safe method for carrying out a specific task, derived from the risk assessment?
Flip two cards at a time to find matching terms.
Term Pairs
When working at height on a step ladder during the installation, what is the most important safety consideration?
Duties requiring employers to assess and limit exposure to dust, gases, fumes and other harmful materials at work.
A colleague receives an electric shock and is still in contact with the supply. What is your correct first action?
Which of the following is a defined 'dangerous occurrence' reportable under RIDDOR on a construction site?
Question · Hard
The broad category of safety helmets, gloves, eye shields and hearing defenders that employers must supply free when a risk assessment shows they are needed.
Chapter 2: Health & Safety Legislation & Site Working
2.1 Electricity at Work Regulations 1989
Why must a permit-to-work system sometimes be used before electrical work begins?
Find five hidden terms in a grid of letters.
Term Search
When isolating a three-phase distribution board, what additional combination must be proved dead compared with a single-phase circuit?
Duties on those who own or control a wide range of machinery, tools and apparatus, requiring it to be suitable, safely maintained and inspected.
What is the main reason a proving unit is preferred over a 'known live socket' for proving a voltage indicator?
Which PPE is most directly relevant when there is a residual risk of arc flash during testing at a distribution board?
A periodic assessment record that states whether an existing fixed wiring system remains safe for continued service.
Inspection and testing
2.2 HASAWA 1974, RIDDOR 2013 & PUWER 1998
What information should a warning label attached to an isolated circuit breaker display?
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Manual handling of cable drums should follow which key principle to reduce injury?
Quantity that BS 7671 requires to be measured, calculated or otherwise determined at the origin and other relevant points; a DNO will typically quote 16 kA maximum for a single-phase supply.
Why is the second safe isolation (Section C of the AM2) carried out separately on single-phase, three-phase and the distribution board?
Which of these is a correct control measure for the hazard of dust when chasing walls during installation?
A type of final circuit, typically 2.5 mm² on a 32 A device, wired as a closed loop so current can share between both legs.
2.3 Working at Height, Manual Handling & COSHH
Before drilling or fixing into a wall on site, what should be done to manage the risk of striking hidden services?
What does PUWER 1998 primarily require in relation to the power tools used during the AM2?
A safety switch that opens when it senses an imbalance between the line and neutral conductors, and whose own sensing does not include overload.
On a construction site, why is 110 V centre-tapped-earth (CTE) equipment preferred over 230 V portable tools?
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