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How Often Should Commercial Electrical Connections Be Tested?

Commercial properties need to comply to safety and compliance regulations when it comes to their electrical connections. This means securing an Electrical Installation Condition Report (EICR). But how often do you need one?

An EICR is a complete inspection, along with thorough testing, that assesses the condition of electrical installations throughout your building. It plays a role in identifying potential hazards and non-compliance problems, along with identifying if there are any faults that need to be corrected with urgency.

Why Commercial Properties Require Ongoing Testing

All electrical connections can deteriorate over a period of time. Environmental conditions, general wear and tear, along with changes in usage all play a role in the deterioration of your electrical installations. 

Deterioration can result in:

  • Broken electrical components
  • Faulty wiring
  • Incorrect earthing
  • Outdated equipment
  • Changes by others

The above can all result in significant risks to employees, visitors, and the property. An electrical installation condition report can identify these problems, providing recommendations on how to rectify them.

How Often Should Commercial Electrical Connections Be Tested?

How often your electrician connections are tested is determined by a number of factors, including the type of premises and how you use the property. According to British Standards, you should have your commercial premises electrical connections tested at regular intervals to ensure compliance and maintain safety standards. Most commercial properties have an EICR carried out every five years.

Five years is recommended for regular assessment, ensuring potential issued are identified and rectified. This time frame aligns with regulatory body requirements, along with insurance companies.

It is important to note that an EICR is not a lawful obligation, though it does help you ensure you remain compliant with the following:

  • Electrical and Work Regulations 1989
  • Health and Safety at Work Act 1974

Different Time Scales Based on Building

Some premises require more frequent EICR due to their usage. High risk environments will require more frequent inspections, such as industrial facilities and building with complex electrical systems.

Commercial properties that are subject to frequent additions or changes in electrical equipment also require a more frequent EICR. An EICR should also be conducted for the following:

Occupancy Changes

A commercial property should be inspected and tested whenever a new tenant or owner moves into the premises. This ensures all electrical connections are safe and compliant for the new occupants.

This is often part of the lease agreement or purchase agreement, carried out by landlords and building owners, providing the new occupants with peace of mind.

Major Changes or Alterations

Commercial buildings that make major changes or alterations should secure an EICR to ensure the safety and compliance of any modified systems. This may be an upgrade to the electrical infrastructure, expansion of the building, upgrades to the electrical consumer boards, or after an electrical fault. 

If you experience any of the following, an EICR report will identify the issue and assist with rectification of the problem:

  • Electrical fires
  • Equipment failure
  • Power surges that result in damage or problems
  • Electrical problems causing disruption to employee productivity


By complying with regular electrical connecting testing in your commercial property, you ensure that you meet ongoing safety and compliance at all times. Through regular testing, you reduce the risk of accidents, while showing your commitment to your staff, visitors, and meeting regulations. 

You can also consider having your electrical appliances tested at the same time, reducing the risk of faults and electrical fires. Testing can highlight faulty equipment.


Commercial electrical connection testing should be carried out every five years, when no changes are made. Should you experience any electrical problems, expand your premises, or a new tenant is moving in, then the test should be done to provide peace of mind. Testing helps to highlight potential problems, providing solutions on rectifying the problems before they become serious.

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