Fixed Wire Periodic Test Inspection

Adlec offer a full testing and inspection service on all Industrial, Commercial, Agricultural andDomestic properties. 
We don’t only diagnose the problem but we also offer our customers a remedial solution to repair any defects found during the test and inspection process. Our electrical installations division will prepare a no obligation quotation to repair any deviations from BS7671 and provide the required certification in each case.

Our engineers are qualified to City & Guilds 1 & 2, City & Guilds 2377, 2391 inspection & testing standard and are 17th Edition graded.
All non-domestic electrical installations should be subject to programme of regular testing and inspection. This is due to throughout an electrical installations operational life it suffers damage and deterioration, therefore its essential to inspect and test to maintain a safe operational installation to comply with the requirements of The Electricity At Work Regulations 1989 (BS7671), which provides guidance on how systems must be designed, installed and maintained. Deviations from this British Standard are most likely to be the cause of any problems. So you must ensure that all necessary precautions have been taken to reduce the risk of injury or death through electrical failure.

There are so many reasons for adopting periodic testing. You may need to inspect and test to comply with the IEE Wiring Regulations 17th Edition. Or if you have recently acquired ownership or tenancy of business / workplace premises you may wish to ensure the installation are safe. If you suspect there is a fault or risk of failure, you must take steps to inspect the affected circuits urgently.

The processes involved are similar to that of PAT, in that a thorough visual inspection is first carried out then several electronic tests are carried out by injected test voltages and current through the system to determine the integrity and functionality of cables, accessories and disconnection devices. This form of test and inspection is paramount to safety in the workplace.
Our report identifies and classifies problems according to the I.E.E scale:

  1. Requires urgent attention
  2. Requires improvement
  3. Requires further investigation
  4. Does not comply with BS7671 (this does not necessarily imply that the installation is unsafe)


When is it needed?

The IEE recommends the maximum period between periodic inspection and testing is:

  • Domestic – 10 years or change of occupancy
  • Commercial – 5 years or change of occupancy
  • Residential Accommodation – 5 years
  • Buildings open to public – 3 – 5 years
  • Industrial Buildings – 3 years
  • Special locations eg. Swimming Pools – 1 year

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

  • When a property is being prepared to be let
  • Prior to selling a property or when buying a previously occupied propert

New Installations, Alterations & Additions to existing Installations

Adlec offer a full testing and inspection service on all new installations and alterations to Industrial,Commercial, Agricultural and Domestic properties. 
Every electrical installation during erection and on completion before being put into service is required to be inspected and tested, this requirement also applies to alterations or additions that include the provision of a new circuit to an existing installation (for domestic installations see Part P) This is a requirement of the IEE Wiring Regulations 17th Edition,

Adlec can provide an independent inspection, test and certification of new installations including a first fix inspection to ensure the installation meets BS7671 and appropriate Building Regulations relevant to electrical work. We also offer a specific service to assist clients in meeting their local Building Control requirements with regard to electrical ‘notifiable’ work.

Adlec are registered NICEIC contractor and we our licence is specifically defined to allow us to inspect, test and certify any electrical contractor”s work.

The test and inspections would include:

  • Visual inspection
  • Characteristics of supply at the origin of the installation
  • Protective conductors continuity test
  • Ring Circuit Continuity
  • Insulation resistance test
  • Polarity
  • Earth electrode resistance
  • Earth fault loop impedance test
  • Operation of residual current devices
  • Prospective fault current
  • Site applied insulation and insulation of non conducting floors and walls

PAT Testing

Adlec offer a full PAT testing (portable appliance) to Industrial, Commercial, Agricultural andDomestic properties. 
The level of inspection and testing required is dependant upon the risk of the appliance becoming faulty, which is in turn dependant upon the type of appliance, the nature of its use and the environment in which it is used and can be discuss when we come invest the site or over the phone.
The Health & Safety at Work Act (1974) places such an obligation in the following circumstances:

  • 1. Where appliances are used by employees.
  • 2. Where the public may use appliances in establishments such as hospitals, schools, hotels, shops etc.
  • 3. Where appliances are supplied or hired.
  • 4. Where appliances are repaired or serviced.
  • 5. Landlords also have a duty to take certain precautions against injury or death

Pat testing or portable appliance testing is an important part of any health & safety policy.

The Health & Safety Executive states that 25% of all reportable electrical accidents involve portable appliances. The Electricity at Work Regulations place a legal responsibility on employers, employees and self-employed persons to comply with the provisions of the regulations and take reasonably practicable steps to ensure that no danger results from the use of such equipment. This in effect requires the implementation of a systematic and regular program of maintenance, inspection and testing.

The laws promoted by the HSE and other organisations are designed to improve safety for all in the workplace and other public areas or buildings. With a simple, systematic PAT testing regime you can comply with legislation and ensure that your workforce, your customers and your people are fully protected.


Adlec carries all the necessary equipment, operator licenses and training to work at heights and confined spaces.

This makes us a prime contractor in all Industrial, Commercial, Agricultural and Domestic properties or sites.

Confined Spaces

Our operatives are also trained to work in confined spaces and have the necessary equipment and certification to carry out any electrical installation, repair or testing within confined spaces.

Working at Heights

All our operatives are trained in multiple methods at working at height whether that be from fixed scaffolding, mobile elevated platforms or rooftop working.

Contact Adlec today for more information about our services. A member of our customer’s service team will be able to provide further advice on any specific requirements.


Our electrical engineering services are often requested by customers in a wide range of business sectors. We provide installation, maintenance and repair of electrical systems to many companies and have been a Peel Group approved contractor for many years. We have experience in industries such as; Aerospace, Chemical, Automotive, Defence, Construction, Marine, Financial institutions, Rail, pharmaceutical, Telecoms, Oil and Gas, and many others.

Adlec is the best choice you can make in installing, maintaining and repairing all your electrical systems whenever the need arises. We’ve got the best regarding quality, prices and responsiveness to the demands of our clients. Our workers are experienced and dedicated to their jobs.

High and Low Voltage Cable Installation Services

Adlec install cables in trenches, duct work and all forms of cable containment. Cable installations range from fibre optic through to large CSA power cables. No cable is too large.
We are therefore able to offer the following services, in the knowledge that the works will be completed to the highest standards:

  • Project management
  • Metering & instrumentation
  • LV/HV underground cabling
  • Transformer installation testing and commissioning up to 11kV
  • Earthing system design and installation
  • Protection system design, installation, testing and commissioning
  • High voltage cable fault location and repair work
  • Low voltage switchgear installation and maintenance
  • High voltage switchgear installation and maintenance

All aspects of Cable installations are undertaken, typical projects include:

  • Schools/ universities
  • Distribution Warehouses
  • Large retail & Leisure complexes
  • Industrial Sites

High and Low Voltage Cable Terminations & Jointing

Adlec have certified Cable Jointers available to complete projects on all types of Cables ranging up to 11KV and private networks. We also have an experienced team of approved electricians who can take care of all your control and instrument needs.
Our jointers are trained to work on the following types of cables:

  • PILC
  • XLPE
  • HV

We are able to joint any combination of the above.
All aspects of Cable installations are undertaken, typical projects include:

  • Docks and marine environments
  • Schools/ universities
  • Distribution Warehouses
  • Large retail & Leisure complexes
  • Industrial Sites

Turn Key Electrical Installations

Adlec using its proven track record can offer Turn Key Electrical Installations, from the initial enquiry through to practical completion. At the enquiry stage we would send out a technical engineer to discuss requirements. Following on from the initial consultation we will produce a solution to all your electrical requirements.


  • Project Design
  • Commercial proposal of the engineered solution
  • Client Approval of the project design and drawings
  • The project would be undertaken in accordance with the proposal
  • Upon project completion, full testing and commissioning would be carried out
  • The project is then signed off as to customer’s satisfaction.

Recommended suppliers
We are equally happy to carry out ‘The Electrical Installation’ as this is what we have specialised in as a company, we can also recommend suppliers with whom the customers can deal directly with.
Please talk to us if your electrical requirement is part of a larger multi-product project. 
Also as the lead contractor we would bring together all the provisions for onsite work.
This Includes:

  • Civil Works
  • Building and Construction Work
  • Jointing
  • Onsite Temporary Generators
  • Transport
  • Specialist Lifting and Cranes
  • Access Equipment

CAD Drawing Services

Adlec offers a wide range of CAD electrical drawings dedicated to electric systems. Electrical drawings are more complex and difficult to read because of their complex circuitry but we at Adlec make it easy to understand with our expertise.

You get perfect, professional looking electrical CAD drawings every time. The advantages of using our electrical drawing services are:

  • The final output is editable and will be in a DWG format because we create the drawing as a new file.
  • We can create as many layers as you require. We generate separate layers for dimensions, text, body, hidden lines, and centrelines, etc.
  • We use blocks for different entities.