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It is recommended that all commercial premises undertake a periodic electrical inspection to minimise risk in the workplace. However, we know that there is often confusion around what this means, what it entails and how often it should take place. Therefore, as electrical engineers that specialise in commercial premises, we’re always here to help.
We’ve put together your most frequently asked questions about periodic electrical inspection for commercial premises below.
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An electrical inspection will indicate whether your electrical installations are compliant at the time of testing. Here are 4 key reasons why your inspection is vital to the workplace and your business:
Electrical installations and wiring can deteriorate over time or with use. Often these changes are hidden or go undetected. It is important to identify whether your electrical installations are satisfactory for continued use.
A periodic electrical inspection for commercial premises helps to minimise any risk of injury. It is designed to prevent related injuries such as electric shock or burns. Not only does it promote health and safety, it also minimises the risk of potential damage to your business too.
It is important that you keep hold of any documents issued to you after the inspection.
This ensures that if there is a suspected electrical fault that causes injury or property damage in the future, you can provide evidence that your commercial premises carried out the correct electrical testing procedure. This includes any remedial work you choose to undertake.
If you do not secure an electrical safety certificate for commercial premises, it can invalidate your insurance certificates.
Record of a previous inspection provides your electrician with prior knowledge about your fittings and potential issues. This can prevent costly explorative work during your next inspection.
Firstly, your company, business or commercial premises will need an electrical inspection by a competent electrical engineer. The responsible owner or overseer of each property such as a site manager must find a commercially trained electrician to carry out the inspection as necessary.
Your commercial electrician will:
The process combines a visual inspection with a series of physical tests. The visual check covers accessible parts of the installation, including distribution boards, sockets, switches and visible cabling, looking for signs of damage, wear or non-compliance with current standards.
Alongside this, your electrician uses calibrated test equipment to check things a visual inspection can't reveal, such as insulation resistance, earth continuity and the effectiveness of circuit protection. Together, these checks build a complete picture of the installation's condition, not just how it looks.
How long this takes depends on the size and complexity of your premises. A small commercial unit might be finished within a couple of hours, while a larger site with multiple distribution boards or several floors can take a full day or more. Because some circuits need to be isolated during testing, most commercial inspections are scheduled outside normal working hours or planned around quieter periods, to keep disruption to a minimum.
Once you approve any remedial work, you will be issued with an electrical safety certificate also known as an Electrical Installation Condition Report (EICR).
An EICR is also known as a Fixed Wiring Certificate or an electrical safety certificate. It gives you an accurate overview of the condition of your electrical installations at the time of review.
Your EICR identifies potential danger and outlines recommended remedial work, classified by urgency.
A little preparation on the day helps your inspection run smoothly and reduces the time your electrician needs on site. Make sure all distribution boards, electrical cupboards and plant rooms are clear and accessible, since stored items or furniture blocking these areas can slow the inspection down. If you have a previous EICR or building plans, having them ready for your electrician helps them trace circuits faster and understand any history of remedial work already carried out.
It's also worth letting staff know in advance that certain circuits may be temporarily isolated during testing. This is a normal part of the process, but a heads-up avoids confusion if lights or sockets in a specific area go off for a short period. For sites with sensitive equipment or processes that can't tolerate any interruption, flag this to your electrician beforehand so testing on those circuits can be planned around it.
In order to stay compliant with UK law and regulation, it is important that you renew your electrical safety certificate with a periodic electrical inspection for your commercial premises.
A competent electrician should carry out your inspection every few years to ensure that your premises and staff are as safe as they can be by identifying potential danger and minimising risk of injury or damage.
You can find government guidance on the frequency of your inspection here or contact us for your free site survey
The right interval isn't the same for every business. As a general guide, standard offices, shops and similar low-risk commercial premises are typically inspected every five years. Industrial units are usually tested every three years due to heavier use and greater wear on the installation.
Premises with higher risk factors often need annual or biennial testing instead. For example, sites exposed to moisture, dust or extreme temperatures, or spaces open to the public like leisure centres and swimming pools.
These are starting points rather than fixed rules. The qualified electrician carrying out your inspection will set the actual maximum interval based on the condition of your installation, and this will be stated clearly on your EICR. For a closer look at how these intervals are determined, see our guide to fixed wire testing intervals.
Some larger sites choose to spread testing across a rolling programme rather than inspecting the entire installation in one visit. This typically means testing around a fifth of circuits each year, so the whole system is covered on a five-year cycle without taking large sections offline at once. It's a practical option for multi-floor or multi-building premises where a single full inspection would cause significant disruption.
Learn more about our EICR service
We understand that it can be difficult to keep up with electrical compliance, which is why we offer periodic electrical inspection for commercial premises. We carry out your inspection at the right intervals and to British Safety standards, at a time that is convenient to you.
Finally, you can access your test certificates easily through our secure online portal to ensure you know well in advance when your inspection is due.
We’re passionate about electrical compliance solutions.
To book your free site survey, give us a call on 0113 436 0402
