CTS engineer reviewing a failed electrical appliance test result
PAT Testing Advice

What Happens When an Appliance Fails a PAT Test?

A practical guide to controlling the immediate risk, recording the result and deciding whether the equipment needs repair, replacement or further assessment.

Clear Identification
Recorded Findings
Practical Next Steps
Risk Based Review
Understanding a Failed Result

A Failed Test Needs a Controlled Response

A failed result means the appliance did not meet the inspection or test criteria applied during the assessment. The reason may be visible damage, an incorrect fuse, a damaged connection or an electrical test result outside the accepted limit.

The item should be clearly identified and kept from normal use until a competent decision is made. The result should also be recorded so the facilities team can track what happened and what action followed.

Identify

The Equipment

Control

The Immediate Risk

Record

The Final Action

Electrical appliance inspection and testing by CTS

A Clear Audit Trail

Record the item, fault, location and agreed next action before it returns to service.

Common Reasons for Failure

What a Failed Result May Reveal

The correct response depends on the defect, equipment and test result. The examples below should not be treated as a remote diagnosis.

Damaged Cable or Plug

Cuts, exposed conductors, strained cable grips and damaged plug tops can be identified during visual inspection.

Incorrect Fuse

A fuse that does not suit the equipment can affect the protection provided during a fault.

Earth Continuity Concern

Class I equipment relies on an effective protective earth and may fail if that path cannot be confirmed.

Insulation Test Result

A result outside the accepted test criteria can indicate that further assessment or repair is needed.

Damaged Casing or Controls

Broken housings, switches or guards can expose users to electrical or mechanical risk.

Missing Equipment Information

An unidentified item or incomplete record can prevent the business from maintaining a reliable asset register.

CTS Electrical engineer supporting a Northern Ireland commercial site
Immediate Response

What the Site Team Should Do Next

A simple internal process prevents a failed item being returned to service without the finding being understood and recorded.

Stop normal use of the item where the result indicates it may be unsafe

Use clear identification so the equipment is not returned accidentally

Record the asset number, location, result and reported defect

Refer the item for competent assessment, repair or replacement

Retest repaired equipment where appropriate before it returns to use

Review repeated faults across similar equipment or locations

A Traceable Response

From Failed Result to Final Decision

The record should show what was found, how the risk was controlled and what happened to the equipment afterwards.

01

Identify

Confirm the asset, location and reason recorded for the failed result.

02

Control

Prevent further use while the item is awaiting a competent decision.

03

Resolve

Repair, replace or investigate the equipment according to the finding.

04

Close

Update the asset register with the final outcome and supporting record.

Commercial PAT testing programme managed by CTS Electrical
Use Findings to Improve the Programme

Repeated Failures Can Reveal a Wider Pattern

Several similar failures may point to equipment choice, storage, handling or the working environment. Reviewing these patterns helps the duty holder decide whether checks should change or another practical control is needed.

Frequently Asked Questions

Clear Answers Before You Book

Where the result indicates that the equipment may be unsafe, it should not remain in normal use. It should be identified clearly and controlled until a competent person decides the next action.

Some faults can be repaired by a competent person. Whether repair is appropriate depends on the equipment, damage and manufacturer information. Suitable inspection and testing should be completed before repaired equipment returns to use.

Not automatically. However, repeated or similar faults should prompt a review of comparable equipment, its environment and the existing maintenance plan.

The record should identify the equipment, location, date, result and reported defect. The final action, such as repair, replacement or disposal, should be recorded when known.

The decision should be made by someone with the knowledge and experience needed for the equipment and the work involved. The test result alone should not be used to justify an unsafe return to service.

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