Fixed wire testing

british plug socket

the importance of fixed wire testing

A Fixed Wire Test or Periodic Inspection Report is a check on the electrical circuits to ensure that they are safe and performing well. The outcome of an inspection includes details of issues found and will provide (when required) recommendations for the electrical system against the UK standards of safety for electrical installations.

These are set out in British Standard 7671: 2008 (IEE Wiring Regulations 17th Edition).

Advantages of

fixed wire testing

Fixed wiring is a broad definition however reflects the inspection, which can encompass very little or much. At it’s simplest, an inspection is a non-intrusive visual check of accessible components such as cables, cords, distribution boards, sockets and light fittings.

A thorough inspection could comprise of the following:

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Visual check of all accessible components
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Labelling, i.e. unique identification of circuits
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Functional tests to check whether all the relevant components do what they are supposed to do
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Publishing circuit diagrams, all test results and a summary of any defects with actions recommended to make safe.
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Review of available documentation
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Enquiries to determine the degree to which parts of the system can be isolated
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Survey and testing of the installation’s earthing, continuity, insulation, polarity, layout and accessibility assessment

How it works

What happens during a periodic inspection?

ADH Electrical Services check the electrical installation against the requirements of BS7671 – Requirements for Electrical Installations (IEE Wiring Regulations) The period inspection will take into account all relevant circumstances including the following factors:

  • Adequacy of earthing and bonding
  • Type of wiring system and its condition e.g. cable quality and compliance
  • Suitability of the switches and controls e.g. consumer units (fuse box)
  • Changes in use of the premises which have led to, or might lead to, deficiencies in the installation.
  • Serviceability of equipment e.g. socket-outlets and light fittings
  • Presence of adequate identification and notices
  • Extent of any wear and tear, damage or other deterioration
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your inspection report

A period inspection report (PIR) is the formal method of recording the findings of the periodic inspection. The main purpose of a PIR is to report on the safety condition of an existing installation and offer recommendations if required. Reports have two outcomes which are either ’satisfactory’, in which case no immediate remedial work is required, or ‘unsatisfactory’ which means remedial work is required to make the installation safe.

How we charge for Fixed Wire Testing

Fixed Wire Testing costs from ADH Electrical Services primarily use a ‘per circuit’ cost, to ensure a client only pays for the circuits we find and test.

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After the periodic Inspection

Following the Periodic Inspection Report, should it contain recommendations or improvement requirements for the installation, ADH Electrical Services will provide a fixed price quote for the remedial work.

What our customers think...

Here’s what some of the people we’ve worked with have to say about what we do.



Dean did a great job doing a full rewire. I needed the job doing quickly as I was due to move into the house soon so he moved some jobs about for me and completed the work quickly and too a very high standard. Will be using him again for any future work.



Dean undertook a rewire of a domestic property for me. He was professional, the job was done nice and neatly, it was up to correct standards and regulations. The advice he gave was good as well. I am very happy with the price and the work which was to an excellent standard. I would use him again and would recommend him.


Ian S

Very professional job by Dean at a good price; sorted another job on the day and advised and fixed an unsafe piece of work which he found (loose wiring in a socket). Would recommend his services and would use again.