Periodic inspection explained


All electrical installations deteriorate with age and use. They should therefore be inspected and tested at regular intervals to check whether they are in a satisfactory condition for continued use. Such safety checks are commonly referred to as 'periodic inspection and testing'.

Once completed you will be issued with an Electrical Condition Report (EICR).

A periodic inspection will:

  • Reveal if any of your electrical circuits or equipment are overloaded.
  • Find any potential electric shock risks and fire hazards.
  • Identify any defective electrical work.
  • Highlight any lack of earthing or bonding.

Tests are also carried out on wiring and fixed electrical equipment to check that they are safe. A schedule of circuits is also provided, which is invaluable for a property.

How often is a periodic inspection required?

Your electrics should be inspected and tested every:

  • 10 years for an owner-occupied home.
  • 5 years for a rented home.
  • 3 years for a caravan
  • 1 year for a swimming pool.

Other times when a periodic inspection should be carried out are:

  • When a property is being prepared for letting.
  • Before selling a property or buying a previously-occupied property.

Who should carry out the periodic inspection and what happens?

Periodic inspection and testing should be carried out only by electrically competent persons, such as registered electricians like Nest Electrics. They will check the condition of the electrics against the UK standard for the safety of electrical installations, BS 7671 – Requirements for Electrical Installations (IET Wiring Regulations).

The inspection takes into account all the relevant circumstances and checks on:

  • The adequacy of earthing and bonding.
  • The suitability of the switchgear and controlgear. For example, an old fusebox with a wooden back, cast-iron switches, or a mixture of both will need replacing.
  • The serviceability of switches, sockets and lighting fittings. Items that  may need replacing include: older round-pin sockets, round light switches, cables with fabric coating hanging from ceiling roses to light fittings, black switches and sockets mounted in skirting boards.
  • The type of wiring system and its condition. For example, cables coated in black rubber were phased out in the 1960s. Likewise cables coated in lead or fabric are even older and may well need replacing (modern cables use longer-lasting pvc insulation).
  • Sockets that may be used to supply portable electrical equipment for use outdoors, making sure they are protected by a suitable residual current device (RCD).
  • The presence of adequate identification and notices.
  • The extent of any wear and tear, damage or other deterioration.
  • Any changes in the use of the premises that have led to, or may lead to, unsafe conditions.

Nest Electrics would then issue an Electrical Installation Condition Report detailing any observed damage, deterioration, defects, dangerous conditions and any non-compliances with the present-day safety standard that might give rise to danger.

If anything dangerous or potentially dangerous is found, the overall condition of the electrical installation will be declared to be 'unsatisfactory', meaning that remedial action is required without delay to remove the risks to those in the premises.

Nest Electrics begin work at Pinewood Studios - Shepperton


Nest Electrics are happy to be part of the new project with Munro Accoustics, converting one of the stages at Pinewood - Shepperton Film Studios into a state of the art audio editing and recording suite. Nest Electrics will be installing new lighting and power supplys for the new theatres, editing suites and green room.





Unless you’re an electrician, you’re unlikely to know the ins and outs of electrical inspections; what they entail, why you need them, and why you’re responsible.

But given that your duty of care as an employer, building owner or landlord requires you to ensure that all wiring and appliances are safe, it’s important to get clued up.

Periodic electrical inspections and regular appliance testing are two of the most effective ways to ensure that you abide by employment and/or landlord laws by stopping preventable accidents from happing due to neglect and poor maintenance.

1. How Often Should They Be Carried Out?
The frequency at which electrical inspections should be carried out depends greatly on the type of property or building in question (whether it’s residential or commercial) and who is actually in charge of the property – that is to say, whether it’s rented or owned.

Owner-occupied homes should be tested every ten years; rented homes should be tested every five years; caravans should have inspections ever three years; any swimming pools should be tested once a year. It’s also recommended that any necessary PAT testing (Portable Appliance Testing) should be carried out annually, though it is not a legal requirement to do so. 

2. Whose Responsibility Is It To Ensure Testing?
Again, this is entirely dependent on the property in question. If you’re a landlord dealing with a rented property then you have a duty of care under the Landlords and Tenants Act 1985 to ensure that any electrical wiring and installations are safe, and are also maintained for the duration of their tenancy.   

3. Is Electrical Testing A Legal Requirement?
Yes and no. Strictly speaking, simply not having appliances tested or inspected is not against any laws but as an employer, landlord or building owner you do have a responsibility to ensure that all electrical appliances and wiring are safe. If a preventable accident does occur, you will have broken the law by not ensuring safety – it is, after all, your duty of care.

The best way to avoid this is to schedule in regular PAT testing and periodic thorough electrical inspections – not only will it help to identify any potential faults which could cost money, it also guarantees safety, helping you comply with all landlord and building owner laws. In essence, periodic testing is the best way to comply with the laws that say you must make all electrical appliances and wiring safe.

Regardless of what kind of inspection or testing you need carrying out, whether it’s a small amount of testing in rented properties or HMO, or a large-scale inspection for your business, then we can help. Thanks to our following of IEE Wiring Regulations (BS 7671:2015), you can rely on our electrical inspections at NestElectrics

With our years of experience and broad expertise, we’re able to provide accurate and reliable inspections and electrical testing so you can be sure that the wiring and electrics in your premises are safe and working properly. For more information, call us now on 07958 236701 or get in touch using our website’s online contact form.




The lights have gone out and nothing (electrical) works – what do you do? It can be easy to panic in this situation but at Nest Electrics we have decided to shed some light on the situation. This is our step-by-step guide which outlines what you should and shouldn’t do when all the lights go out.


If it’s just the lights which have gone out then make sure you check the fuse box to see if one of your fuses have blown. If this is the case it’s a simple matter of replacing your fuse. If all of your lights and appliances are all out, then it could be something else.


If the whole house is out of electricity then go round to the neighbours and see if their electricity has gone. If this is the case, then it may be a problem in your local area. One way to find out is to phone your electricity provider and see what the matter is. If it is something their end they will try and let you know when your electricity will be turned on.



Don’t use your gas oven to heat your home, this could prove fatal as the appliance is not designed for this purpose. Furthermore, when you use candles make sure you watch them at all times and keep a close eye on them. The last thing you want to do is cause a fire.


Make sure you turn off all appliances so when the electricity does come back on your not surprised by the sudden life in your home. One trick which we think is quite useful is to leave one light on (turn the rest off) and when the electricity comes back on you’ll know about it.

Hopefully this has helped but if the electricity is off and it is not the fuse, it’s not affected anyone else on the street and it’s not your local electricity provider make sure you pick up the phone and dial 07958 236 701 to speak with the team here at Nest Electrics, we are based in NW10 Kensal Rise, but we cover the whole of London.