- Immediate Response
- Electricians Available 24/7
- Niceic Electrical Services
Domestic electrical installation certificate:Domestic electrical installation certificate - What are they ?
The Niceic Domestic Electrical Installation certificate is to confirm that the electrical installation work to which it relates has been designed, constructed, inspected, tested and verified in accordance with the national standard for the safety of electrical installations, British Standard 7671 (as amended) - Requirements for Electrical Installations (the lEE Wiring Regulations).
Detailed guidance on the completion of Niceic forms of certification and reporting is included in the latest edition of the Niceic Inspection, Testing and Certification book.
The Niceic Domestic Electrical Installation Certificate is to be issued only for the initial certification of a new installation, or for new work associated with an alteration or addition to an existing installation, ie a single dwelling (house or individual flat), carried out in accordance with BS 7671, including amendments. It is not to be used for a periodic inspection of an existing installation, for which a Domestic Periodic Inspection Report of a Periodic Inspection Report form should be used.
The Niceic Domestic Electrical Installation Certificate may be used only where all the following conditions apply:
the electrical installation work relates to a single dwelling (house or individual flat)
the design, the construction, and the inspection and testing of the electrical installation work has been the responsibility of one person or Approved Contractor
the installation forms part of a TT, TN-S or TN-C-S (PME) system
protective measure for fault protection is provided primarily by Automatic Disconnection of Supply (ADS).
Where an installation consists of more circuits than can be recorded on Page 3, continuation sheets for circuit details and test results should be used. Contact Niceic Sales for pads of continuation sheets.
Where a certificate is to be issued for an alteration or addition to an existing installation, the designer is required to ascertain that the rating and condition of any existing equipment, including that of the distributor (which may have to carry any additional load), are adequate to accommodate in safety the altered circumstances resulting from the modifications, and that the earthing and bonding arrangements (if necessary for the protective measures applied for the safety of the addition or alteration) are also adequate (see Regulation 131.8).
Where an Approved Contractor discovers the existence of a dangerous or potentially dangerous situation in the existing installation (such as the absence of earthing or protective bonding conductors), the new work should not proceed and the client should be advised immediately, preferably in writing, to satisfy the duties imposed on competent persons by the Electricity at Work Regulations 1989. This can also be achieved by the issue of an Niceic Electrical Danger Notification Certificate to the client.
The three-page certificate marked ‘Original’ is to be given to the person ordering the work, as required by Regulation 631.1. The certificate marked ‘Duplicate’ is to be retained by the Approved Contractor and made available for review by Niceic.
Where the electrical installation work to which the certificate relates includes the provision of a mains-powered fire detection and alarm system (such as one or more smoke alarms), the certificate must be accompanied by a separate certificate in accordance with British Standard BS 5839: Part 6: Code of Practice for the design and installation of fire detection and alarm systems in dwellings. Such certificates are available from Niceic Sales.
Completing the certificate
Details of the client, Address of the installation and Details of the installation
The client’s name and address and the address of the installation, together with information relating to the extent of the installation, should fully and uniquely identify the scope and nature of the electrical installation work covered by the certificate. If the client is the builder of the property, the builder should be advised to pass the original certificate to the first owner of the installation.
Design, construction, inspection and testing
The name and signature of the person responsible for the design, construction, inspection and testing of the electrical installation work must be inserted in the spaces provided. The inspection and test results should be reviewed by the registered Qualified Supervisor, who should confirm such review by signing in the appropriate space provided. By signing this section, the Qualified Supervisor is confirming that the certificate has been completed satisfactorily prior to issue. Generally, only a registered Qualified Supervisor employed by the Approved Contractor is recognised by Niceic as eligible to sign the certificate to take responsibility for reviewing the results of the inspection and testing. In exceptional circumstances, the Qualified Supervisor may delegate authority for reviewing the inspection and test results to another competent full-time electrical supervisor employed by the Approved Contractor. Only a registered Qualified Supervisor directly employed by the Approved Contractor may sign the certificate to take responsibility for both the inspection and testing, and for reviewing the results.
Exceptionally, where the use of new materials or inventions leads to departures from BS 7671, details of these departures, which must not reduce the degree of safety, are to be recorded in the box provided in the certificate (Regulation 120.4). Where there are no departures, the box should be completed by entering ‘None’.
Certification provides an assurance to the recipient that the electrical installation work has been inspected and tested, that the results have been compared with the relevant criteria (Regulation 612.1), and that the work is in accordance with BS 7671, as amended, except for any departures sanctioned by the designer and recorded on the certificate.
Particulars of the Approved Contractor
Completion of the Particulars of the Approved Contractor will identify to the recipient the organization responsible for the work certified by their representative(s). The registered trading title, address and postcode must be given, together with the Niceic Enrolment Number and, where appropriate, the Branch Number.
The appropriate time interval before the next inspection of the complete installation should be inserted in the box headed Next inspection, lEE Guidance Note 3 gives guidance on the maximum time interval recommended for different types of premises. For domestic electrical installation work, the maximum interval to the first periodic inspection is normally ten years.
Comments on existing installation
The box for Comments on existing installation must be completed by inserting either ‘None’ where there are no observations to record, or by entering relevant comment(s). There is no requirement to carry out a formal inspection of parts of an existing installation unrelated to the work to which the certificate applies, but a periodic inspection report should be recommended to the client if there is reason to believe that unrelated parts of the existing installation are in an unsatisfactory condition.
Schedule of additional records
Where the electrical work to which the certificate relates includes the installation of a fire alarm system and/or an emergency lighting system (or a part of such systems), the electrical safety certificate should be accompanied by the particular certificate(s) for the system(s).
Where an installation consists of more circuits than can be recorded on page 3, one or more continuation schedules should be used and their page numbers recorded in this section.
Supply characteristics and Particulars of installation at the origin
Completion of the sections entitled Supply characteristics and Particulars of installation at the origin should be straightforward and needs no explanation except to say that, where means of earthing is the distributor’s facility, the external earth fault Loop impedance, Ze, should be determined by enquiry to the distributor, for design purposes. Irrespective of the particular means of earthing, Ze should also be measured and the ohms value recorded in the box provided for this purpose. The measurement of Ze is required to verify that the intended means of earthing is both present and of appropriate ohms value.
All boxes on the Schedule of items inspected and the Schedule of items tested are to be completed, as appropriate for the particular installation, by inserting a ‘/‘ to indicate that an inspection or a test was carried out and that the result was satisfactory, or ‘N/A’ to indicate that a particular inspection or test was not applicable to the particular installation.
Circuit details and test results
A Schedule of circuit details and test results must be completed for each consumer unit, switchboard, distribution board and the like included in the new work. Every circuit, including distribution circuits (sub-mains), must be recorded. Attention is drawn to the first line of the Schedule of circuit details and test results which may be used to record the details of the distribution circuit connecting the meter to the consumer unit at the origin of the installation (the circuit including the meter tails).
An installation may include more than one consumer unit or distribution board. For example, a small consumer unit may be provided in a detached garage. In such a case, the installation will comprise the circuit including the meter tails, a series of final circuits in the dwelling, a distribution circuit supplying the garage and a series of final circuits in the garage. Each circuit should be entered on a separate line in the Schedule of circuit details. A distribution circuit should be identified by means such as adding the letter ‘D’.
The Test instruments section should be completed by identifying the serial numbers of the test instruments used, for traceability purposes. (A record of the accuracy and consistency of all test instruments used for certification purposes must be maintained and made available for inspection by Niceic).
Issuing a certificate
Note that a certificate must not be issued if the result of an inspection or test is unsatisfactory, and that no inspection or test should be prevented by a limitation. Therefore, the insertion of a ‘)(‘ to indicate that the result of an inspection or test was unsatisfactory, or a ‘LIM’, to indicate that a limitation prevented an inspection or test being carried out, are NOT options for a Domestic Electrical Installation Certificate.
For further guidance on completing the certificate, refer to the practical advice and guidance in the Niceic Inspection, Testing and Certification book, the current edition of BS 7671, and lEE Guidance Note 3.
This safety certificate has been issued to confirm that the electrical installation work to which it relates has been designed, constructed, inspected, tested and verified in accordance with the national standard for the safety of electrical installations, British Standard 7671 (as amended) - Requirements for Electrical Installations (the lEE Wiring Regulations).
Where, as will often be the case, the installation incorporates a residual current device (RCD), there should be a notice at or near the consumer unit stating that the device should be tested at quarterly intervals. For safety reasons, it is important that you carry out the test regularly.
Also for safety reasons, the complete electrical installation will need to be inspected and tested at appropriate intervals by a competent person. Niceic* recommends that you engage the services of an Approved Contractor for this purpose. The maximum interval recommended before the next inspection is stated on Page 1 under Next Inspection. There should also be a notice at or near the consumer unit indicating when the inspection of the installation is next due.
Only an Niceic Approved Contractor or Conforming Body responsible for the construction of the electrical installation is authorized to issue this Niceic certificate.
The Domestic Electrical Installation Certificate consists of at least three pages. The certificate is invalid if the second or third pages (containing schedules) are missing. The certificate has a printed seven-digit serial number which is traceable to the Approved Contractor to which it was supplied.
This certificate is intended to be issued only for the initial certification of a new electrical installation, or for new work associated with an alteration or addition to an existing electrical installation, in a single dwelling (house or individual flat). For new electrical installation work in other than a single dwelling, a full Electrical Installation Certificate should have been issued.
This certificate should not have been issued for reporting on the condition of an existing electrical installation. A Periodic Inspection Report or a Domestic Electrical Installation Periodic Inspection Report should be issued for such an inspection.
You should have received the certificate marked ‘Original’ and the Approved Contractor should have retained the certificate marked ‘Duplicate’.
The ‘Original’ certificate should be kept in a safe place and shown to any person inspecting or undertaking work on the electrical installation in the future. If you later vacate the property, this certificate will demonstrate to the new owner or user that the electrical installation work complied with the requirements of the national electrical safety standard at the time the certificate was issued.
Page 1 of this certificate provides details of the electrical installation, together with the names and signatures of the persons certifying the installation work and reviewing the results of inspection and testing on behalf of the Approved Contractor responsible for the work, details of which are also given on that page.
Certification provides an assurance that the electrical installation work has, been fully inspected and tested, and that the work has been carried out in accordance with the requirements of BS 7671 (except for any departures recorded in the appropriate part of the certificate).
All un-shaded boxes should have been completed either by insertion of the relevant details or by entering ‘N/A’, meaning ‘Not Applicable’, where appropriate.
Where the electrical work to which this certificate relates includes the provision of a mains- powered fire detection and alarm system (such as one or more smoke alarms), this electrical safety certificate must be accompanied by a separate certificate for that system in accordance with British Standard 5839: Part 6 - Code of Practice for the design and installation of fire detection and alarm systems in dwellings.
Should the person ordering the work (eg the client, as identified on Page 1 of this certificate) have reason to believe that any element of the electrical work for which the Approved Contractor has accepted responsibility (as indicated by the signatures on this certificate) does not comply with the requirements of the national electrical safety standard (BS 7671), the person should in the first instance raise the specific concerns in writing with the Approved Contractor. If the concerns remain unresolved, the client may make a formal complaint to Niceic, for which purpose a standard complaint form is available on request.
The complaints procedure offered by Niceic is subject to certain terms and conditions, full details of which are available upon application and from the website. Niceic does not investigate complaints relating to the operational performance of electrical installations (such as lighting levels), or to contractual or commercial issues (such as time or cost).