IET Code of Practice

What is the IET Code of Practice?

• AA document unrelated to PAT
• BA safety manual for electricians
• CThe 5th edition document providing detailed guidance on PAT testing requirements✓
• DA guide to professional behaviour

Answer: The IET (Institution of Engineering and Technology) Code of Practice for in-service inspection and testing of electrical equipment is the standard reference for PAT procedures.

What are 'user checks' according to the IET Code of Practice?

• AChecks IET discourages
• BChecks which may only ever be carried out by a professional testing engineer
• CEquipment purchase checks
• DSimple frequent visual inspections by users between formal PAT tests✓

Answer: User checks are simple, frequent visual inspections (weekly, monthly) by equipment users to spot obvious faults between formal PAT tests.

What is the purpose of the IET Code of Practice risk-based approach?

• ATo eliminate all testing
• BTo reduce testing requirements
• CTo adjust testing frequency based on equipment type and environment risk level✓
• DAll equipment gets the same frequency

Answer: The risk-based approach recommends different testing intervals based on equipment classification and environment, ensuring resources are used effectively.

What interval is commonly used for office Class I equipment?

• AMonthly
• B3-5 years
• C3-6 months
• D12-24 months✓

Answer: Many practitioners use 12-24 months as a starting point for office equipment (low risk, normal use) — the current 5th edition (2020) does not mandate a fixed table and requires case-by-case risk assessment based on equipment type, environment, and user competence.

What testing frequency is commonly used for leisure/public equipment?

• A5-8 years
• B6-12 months✓
• C1-3 months
• D24-36 months

Answer: Leisure and public facilities are often treated as higher risk (more intensive use), with many practitioners using 6-12 month intervals as a starting point — the current 5th edition (2020) does not mandate a fixed table and requires case-by-case risk assessment.

What testing frequency is commonly used for industrial equipment?

• A4-6 years
• B1-3 months✓
• C12-24 months
• D24-36 months

Answer: Industrial environments are often treated as highest risk, with many practitioners using 1-3 month intervals (or more frequent) as a starting point — the current 5th edition (2020) does not mandate a fixed table and requires case-by-case risk assessment.

What does IET guidance say about Class II equipment testing?

• ATesting less frequently than Class I, at double the interval
• BThey do not need any form of testing at all once purchased
• CSame intervals as Class I, but with different tests✓
• DTesting more frequently than Class I, at half the interval

Answer: Class II equipment follows similar testing intervals but doesn't require earth continuity tests since it has no earth connection.

What is 'formal visual inspection' according to IET?

• AA systematic, documented examination of visible components✓
• BAn optional extra
• CAn examination which may only ever be performed by the manufacturer
• DA quick glance over the item before it is handed back to the user

Answer: Formal visual inspection is a systematic, thorough examination of equipment's visible condition, forming the first part of combined inspection and testing.

What does the IET Code say about documentation?

• ADocumentation is optional
• BDetailed records of all tests and results must be maintained✓
• CDocumentation is unnecessary provided that the labels have been applied
• DOnly the failures need documenting, since passes need no written record

Answer: The IET Code emphasises that comprehensive, accurate records of all PAT testing are essential for demonstrating due diligence.

What is the IET's definition of 'combined inspection and test'?

• AOnly visual inspection
• BSystematic formal visual inspection followed by appropriate electrical testing✓
• COnly electrical testing
• DRandom checks

Answer: Combined inspection and test is the complete PAT process: first systematic visual examination, then electrical testing if appropriate.

Does IET guidance distinguish between different user risk levels?

• AIt applies one interval to all users
• BYes, equipment used by vulnerable people may require more frequent testing✓
• COnly by environment
• DIntervals are varied only by the manufacturer, and never by the user or environment

Answer: IET guidance recognises that equipment used by vulnerable people (children, elderly, disabled) may warrant more frequent testing.

What does IET say about grounds for equipment rejection?

• AEquipment should be rejected if safety cannot be assured through testing and repair✓
• BAll failed equipment can be repaired
• CEquipment is rarely rejected
• DRejection is never recommended

Answer: IET guidance states equipment should be rejected (marked as beyond repair) when damage is too severe to safely repair.

What is IET guidance on managing equipment throughout its lifecycle?

• AOnly test when problems occur
• BTesting is one-time only
• CTesting is irrelevant after purchase
• DPlanned maintenance and regular testing ensure ongoing safety from purchase through replacement✓

Answer: IET guidance emphasises systematic management of equipment safety throughout its operational life, from purchase through disposal.

Does the IET Code recommend testing frequency adjustments based on specific incidents?

• AIncreases are always ruled out
• BDecrease frequency after incidents
• CStandard intervals only
• DYes, if incidents occur or faults are found, testing frequency should increase✓

Answer: If faults are found or incidents occur, IET guidance recommends increasing testing frequency for affected equipment.

What is the IET's primary objective for PAT testing?

• AReduce equipment costs
• BTo comply with the manufacturer's own instructions and nothing more
• CEnsure electrical safety and prevent shock and fire hazards✓
• DTo reduce the working lifespan of the electrical equipment in use

Answer: The fundamental objective of IET guidance on PAT testing is to ensure electrical safety and prevent electrical shock and fire hazards.