PAT testing for businesses: how often does it need doing?

Quick answer: There's no single fixed interval. How often you test depends on the type of equipment, how it's used and the environment. Low-risk offices can often test less often than busy or harsh environments.

What the law says

The law requires electrical equipment used at work to be maintained so it's safe. It doesn't set a fixed date for PAT testing. Instead, businesses are expected to take a sensible, risk-based approach.

What affects how often you test

• The environment: an office is lower risk than a construction site, kitchen or workshop.
• The type of equipment: handheld and portable items get more wear than fixed IT equipment.
• How it's used: equipment used by the public or moved around regularly needs more frequent checks.
• Past results: if items keep failing, testing should be more frequent.

Don't skip visual checks

Many faults can be spotted by eye: damaged cables, cracked plugs, scorch marks. Encouraging staff to check equipment before use, and to report problems, is a simple habit that makes a big difference.

Keep good records

A clear asset register showing what was tested, when and the result is what insurers and auditors want to see. It also makes the next round of testing quicker.

Getting it right for your site

A good PAT tester will look at your building and equipment and recommend sensible intervals, rather than testing everything every year by default.

Need a hand?

EMS is a NAPIT registered commercial contractor working across London and the UK. Get a free quote and we'll come back to you quickly.

Related service: PAT Testing