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portable appliance testing (PAT)

electrical cable

Data cabling

smart thermostat, smart home technology, IoT, internet of things, energy saving, energy, heating, app,

Why is it necessary to maintain electrical equipment? 

Portable appliance testing


Electric shock can kill or seriously injure. This is one of the hazards that electrical safety legislation is intended to protect against.

The Electricity at Work Regulations requires, in Regulation 4(2), that:

As may be necessary to prevent danger, all systems shall be maintained so as to prevent, so far as is reasonably practicable, such a danger.

13 amp plug

Who has responsibilities?

The following people have responsibility for electrical systems and equipment:

  • users of electrical equipment (whose responsibility include user checks)
  • duty-holders with responsibility for electrical maintenance who may not necessarily have detailed technical knowledge
  • the competent person carrying out the formal visual inspection and the inspections and tests
  • other duty-holders such as company directors, managers or building services managers
  • hirers and suppliers of hired equipment
  • landlords and property management companies in control of HMOs

faulty cable, faulty wires, dangerous cable, electric shock

What needs to be done to comply with the relevant requirements of the Electricity at Work Regulations?

The requirement of the Electricity at Work Regulations 1989 can be met by

  • performing in-service inspection and testing, which consists of 3 activities:
    • user checks
    • formal visual inspections (without tests)
    • combined inspections and tests
  • performing maintenance or, if necessary, replacing the defective item of equipment (depending upon the in-service inspection and testing), and
  • keeping up-to-date records that can be a means of showing compliance







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