Title Page

  • GB ELECTRICAL AND BUILDING SERVICES LTD

(REQUIREMENTS FOR ELECTRICAL INSTALLATIONS - BS 7671 [IET WIRING REGULATIONS])

  • Job Reference number

DETAILS OF THE CLIENT

  • Name:

  • Address:

DESCRIPTION AND EXTENT OF THE INSTALLATION

  • Description of installation:

  • Extent of installation covered by this Certificate:

  • New installation

  • Addition to an existing installation

  • Alteration to an existing installation

FOR DESIGN

  • I/We being the person(s) responsible for the design of the electrical installation (as indicated by my/our signatures below), particulars of which are described above, having exercised reasonable skill and care when carrying out the design and additionally where this certificate applies to an addition or alteration, the safety of the existing installation is not impaired, hereby CERTIFY that the design work for which I/we have been responsible is to the best of my/our knowledge and belief in accordance with BS 7671:2018, except for the departures, if any, details as follows:

  • BS 7671:2018, amended to (date) except for the departures, if any, detailed as follows:

  • Details of departures from BS 7671 (Regulations 120.3, 133.1.3 and 133.5):

  • Details of permitted exceptions (Regulation 411.3.3). Where applicable, a suitable risk assessment(s) must be attached to this Certificate

  • Risk assessment attached

The extent of liability of the signatory or signatories is limited to the work described above as the subject of this Certificate

For the DESIGN of the installation:

  • Designer 1 Name:

  • Designer 1 Signature:

  • Designer 1 Date:

  • Designer 2 Name:

  • Designer 2 Signature:

  • Designer 2 Date:

FOR CONSTRUCTION

  • I being the person responsible for the construction of the electrical installation (as indicated by my signature below), particulars of which are described above, have exercised reasonable skill and care when carrying out the construction hereby CERTIFY that the construction work for which I have been responsible is to the best of my knowledge and belief in accordance with BS 7671:2018, except for the departures, if any, detailed as follows:

  • Details of departures from BS 7671 (Regulations 120.3 and 133.5):

The extent of liability of the signatory is limited to the work described above as the subject of this Certificate

For CONSTRUCTION of the installation:

  • Constructor Name:

  • Constructors Signature:

  • Constructors Date:

FOR INSPECTION AND TESTING

  • I being the person responsible for the inspection and testing of the electrical installation (as indicated by my signature below), particulars of which are described above, have exercised reasonable skill and care when carrying out the construction hereby CERTIFY that the work for which I have been responsible is to the best of my knowledge and belief in accordance with BS 7671:2018, except for the departures, if any, detailed as follows:

  • Details of departures from BS 7671 (Regulations 120.3 and 133.5):

The extent of liability of the signatory is limited to the work described above as the subject of this Certificate

For INSPECTION AND TESTING of the installation:

  • Inspectors Name:

  • Inspectors Signature:

  • Inspectors Date:

NEXT INSPECTION

  • I/We the designer(s), recommend that this installation is further inspected and tested after an interval of not more than Years/Months

PARTICULARS OF SIGNATORIES TO THE ELECTRICAL INSTALLATION CERTIFICATE

Designer 1

  • Name:

  • Company:

  • Address:

  • Postcode:

  • Tel Number:

Designer 2 (if applicable)

  • Name:

  • Company:

  • Address:

  • Postcode:

  • Tel Number:

Constructor

  • Name:

  • Company:

  • Address:

  • Postcode:

  • Tel Number:

Inspector

  • Name

  • Company:

  • Address:

  • Postcode:

  • Tel Number:

SUPPLY CHARACTERISTICS AND EARTHING ARRANGEMENTS

Earthing arrangements

  • TN-C

  • TN-S

  • TN-C-S

  • TT

  • IT

Number and Type of Live Conductors

  • AC

  • 1-Phase, 2-Wire

  • 2-Phase, 3-Wire

  • 3-Phase, 3-Wire

  • 3-Phase, 4-Wire

  • DC

  • 2-Wire

  • 3-Wire

  • Other

  • Confirmation of supply polarty

  • Other sources of supply (as detailed on attached schedule)

Nature of Supply Parameters

  • Nominal Voltage, U/Uo (by enquiry) V

  • Nominal Frequency, f (by enquiry) Hz

  • Prospective fault current, Ipf (by enquiry or measurement) kA

  • External loop impedance, Ze (by enquiry or measurement) Ω

Supply Protective Device

  • BS (EN)

  • Type

  • Rated Current (Amps)

  • PARTICULARS OF INSTALLATION REFERRED TO IN THE CERTIFICATE

Means of Earthing

  • Distributor’s facility

  • Installation earth electrode

Maximum Demand (Load) kVA or Amps

  • kVA

  • Amps

Details of installation Earth Electrode (where applicable)

  • Rod(s)

  • Tape

  • Mat/Grid

  • Other (Specify)

  • Location

  • Electrode resistance to Earth (Ω)

Main Protective Conductors

  • Material

  • Size (csa) mm2

  • Connection / Continuity Verified

Main Protective Bonding Conductors (to extraneous-conductive-parts)

  • Material

  • Size (csa) mm2

  • Connection / Continuity Verified

  • To water pipes

  • To gas installation pipes

  • To oil installation pipes

  • To structural steel

  • To lightning protection

  • To other (Specify)

Main Switch / Switch Fuse / Circuit Breaker /RCD

  • Location

  • BS (EN)

  • Number of Poles

  • Current rating (A)

  • Fuse / device rating or setting (A)

  • Voltage rating (V)

If RCD Main Switch

  • Rated residual operating current (mA)

  • Rated time delay (ms)

  • Measured operating time (ms)

COMMENTS ON EXISTING INSTALLATION (In the case of an alteration see Regulation 644.1.2)

  • Comments

SCHEDULES (The attached Schedules are part of this document and this Certificate is valid only when they are attached to it)

  • Number of Schedules of Inspections attached

  • Number of Schedules of Test Results attached

SCHEDULE OF INSPECTIONS (for new installation work only) for DOMESTIC AND SIMILAR PREMISES WITH UP TO A 100 Amp SUPPLY

  • NOTE 1: This form is suitable for many types of smaller installation, not exclusively domestic.

  • ALL ITEMS INSPECTED IN ORDER TO CONFIRM, AS APPROPRIATE, COMPLIANCE WITH THE RELEVANT CLAUSES IN BS7671. THE LIST OF ITEMS AND ASSOCIATED EXAMPLES WHERE GIVEN ARE NOT EXHAUSTIVE.

  • NOTE 2: Check each box to indicate an inspection has been carried out and the result is satisfactory, or N/A to indicate that the inspection is not applicable to a particular item.

ITEM NUMBER AND DESCRIPTION

    (1) EXTERNAL CONDITION OF INTAKE EQUIPMENT (VISUAL INSPECTION ONLY)
  • (1.1) Service Cable

  • (1.2) Service head

  • (1.3) Earthing arrangement

  • (1.4) Meter Tails

  • (1.5) Metering Equipment

  • (1.6) Isolator (where present)

  • (2) PARALLEL OR SWITCHED ALTERNATIVE SOURCES OF SUPPLY
  • (2.1) Adequate arrangements where a generating set operates as a switched alternative to the public supply (551.6)

  • (2.2) Adequate arrangements where a generating set operates in parallel with the public supply (551.7)

(3) AUTOMATIC DISCONNECTION OF SUPPLY

  • (3.1) Presence and adequacy of earthing and protective bonding arrangements:

  • (3.2) Distributor's earthing arrangement (542.1.2.1; 542.1.2.2)

  • (3.3) Installation earth electrode (where applicable) (542.1.2.3)

  • (3.4) Earthing conductor and connections, including accessibility (542.3; 543.3.2)

  • (3.5) Main protective bonding conductors and connections, including accessibility (411.3.1.2; 543.3.2; 544.1)

  • (3.6) Provision of safety electrical earthing/bonding labels at all appropriate locations (514.13)

  • (3.7) RCD(s) provided for fault protection (411.4.204; 411.5.3)

(4) BASIC PROTECTION

  • (4.1) Presence and adequacy of measures to provide basic protection (prevention of contact with live parts) within the installation:

  • (4.2) Insulation of live parts e.g. conductors completely covered with durable insulating material (416.1)

  • (4.3) Barriers or enclosures e.g. correct IP rating (416.2)

(5) ADDITIONAL PROTECTION

  • (5.1) Presence and effectiveness of additional protection methods:

  • (5.2) RCD(s) not exceeding 30 mA operating current (415.1; Part 7), see Item 8.14 of this schedule

  • (5.3) Supplementary bonding (415.2; Part 7)

(6) OTHER METHODS OF PROTECTION

  • (6.1) Presence and effectiveness of methods which give both basic and fault protection:

  • (6.2) SELV system, including the source and associated circuits (Section 414)

  • (6.3) PELV system, including the source and associated circuits (Section 414)

  • (6.4) Double or reinforced insulation ie Class II or equivalent equipment and associated circuits (Section 412)

  • (6.5) Electrical separation for one item of equipment e.g. shaver supply unit (Section 413)

(7) CONSUMER UNIT(S) / DISTRIBUTION BOARD(S):

  • (7.1) Adequacy of access and working space for items of electrical equipment including switchgear (132.12)

  • (7.2) Components are suitable according to assembly manufacturer's instructions or literature (536.4.203)

  • (7.3) Presence of linked main switch(es) (462.1.201)

  • (7.4) Isolators, for every circuit or group of circuits and all items of equipment (462.2)

  • (7.5) Suitability of enclosure(s) for IP and fire ratings (416.2; 421.1.6; 421.1.1.201; 526.5)

  • (7.6) Protection against mechanical damage where cables enter equipment (522.8.1; 522.8.5; 522.8.11)

  • (7.7) Confirmation that ALL conductor connections are correctly located in terminals and are tight and secure (526.1)

  • (7.8) Avoidance of heating effects where cables enter ferromagnetic enclosures e.g. steel (521.5)

  • (7.9) Selection of correct type and ratings of circuit protective devices for overcurrent and fault protection (411.3.2; 411.4, 411.5, 411.6; Sections 432, 433; 537.3.1.1)

  • (7.10) Presence of appropriate circuit charts, warning and other notices:

  • (7.11) Provision of circuit charts/schedules or equivalent forms of information (514.9)

  • (7.12) Warning notice of method of isolation where live parts not capable of being isolated by a single device (514.11)

  • (7.13) Periodic inspection and testing notice (514.12.1)

  • (7.14) RCD six-monthly test notice; where required (514.12.2)

  • (7.15) AFDD six-monthly test notice; where required

  • (7.16) Warning notice of non-standard (mixed) colours of conductors present (514.14)

  • (7.17) Presence of labels to indicate the purpose of switchgear and protective devices (514.1.1; 514.8)

(8) CIRCUITS

  • (8.1) Adequacy of conductors for current-carrying capacity with regard to type and nature of the installation (Section 523)

  • (8.2) Cable installation methods suitable for the location(s) and external influences (Section 522)

  • (8.3) Segregation/separation of Band I (ELV) and Band II (LV) circuits, and electrical and non-electrical services (528)

  • (8.4) Cables correctly erected and supported throughout, with protection against abrasion (Sections 521, 522)

  • (8.5) Provision of fire barriers, sealing arrangements where necessary (527.2)

  • (8.6) Non-sheathed cables enclosed throughout in conduit, ducting or trunking (521.10.1; 526.8)

  • (8.7) Cables concealed under floors, above ceilings or in walls/partitions, adequately protected against damage (522.6.201, 522.6.202, 522.6.203; 522.6.204)

  • (8.8) Conductors correctly identified by colour, lettering or numbering (Section 514)

  • (8.9) Presence, adequacy and correct termination of protective conductors (411.3.1.1; 543.1)

  • (8.10) Cables and conductors correctly connected, enclosed and with no undue mechanical strain (Section 526)

  • (8.11) No basic insulation of a conductor visible outside enclosure (526.8)

  • (8.12) Single-pole devices for switching or protection in line conductors only (132.14.1; 530.3.3; 643.6)

  • (8.13) Accessories not damaged, securely fixed, correctly connected, suitable for external influences (134.1.1; 512.2; Section 526)

  • (8.14) Provision of additional protection/requirements by RCD not exceeding 30mA:

  • (8.15) Socket-outlets rated at 32 A or less, unless exempt (411.3.3)

  • (8.16) Supplies for mobile equipment with a current rating not exceeding 32 A for use outdoors (411.3.3)

  • (8.17) Cables concealed in walls at a depth of less than 50 mm (522.6.202; 522.6.203)

  • (8.18) Cables concealed in walls/partitions containing metal parts regardless of depth (522.6.202; 522.6.203)

  • (8.19) Final circuits supplying luminaires within domestic (household) premises (411.3.4)

  • (8.20) Presence of appropriate devices for isolation and switching correctly located including:

  • (8.21) Means of switching off for mechanical maintenance (Section 464; 537.3.2)

  • (8.22) Emergency switching (465.1; 537.3.3)

  • (8.23) Functional switching, for control of parts of the installation and current-using equipment (463.1; 537.3.1)

  • ((8.24) Firefighter's switch's (537.4)

(9) CURRENT-USING EQUIPMENT (PERMANENTLY CONNECTED)

  • (9.1) Equipment not damaged, securely fixed and suitable for external influences (134.1.1; 416.2; 512.2

  • (9.2) Provision of overload and/or undervoltage protection e.g. for rotating machines, if required (Sections 445, 552)

  • (9.3) Installed to minimize the build-up of heat and restrict the spread of fire (421.1.4; 559.4.1)

  • (9.4) Adequacy of working space. Accessibility to equipment (132.12; 513.1)

(10) LOCATION(S) CONTAINING A BATH OR SHOWER (SECTION 701)

  • (10.1) 30 mA RCD protection for all LV circuits, equipment suitable for the zones, supplementary bonding (where required) etc

(11) OTHER PART 7 SPECIAL INSTALLATIONS OR LOCATIONS

  • (11.1) List all other special installations or locations present, if any. (Record the results of particular inspections applied)

INSPECTORS DETAILS

  • Name:

  • Signature:

  • Date:

GENERIC SCHEDULE OF TEST RESULTS

  • Distribution Board (DB) Reference Number

  • Distribution Board Location

  • Zs at DB (Ω)

  • Ipf at DB (kA)

  • Correct supply polarity confirmed

  • Phase sequence confirmed (where appropriate)

DETAILS OF CIRCUITS AND/OR INSTALLED EQUIPEMENT VULNERABLE TO DAMAGE WHEN TESTED

  • Circuit number or Installed equipment

DETAILS OF TEST INSTRUMENT/S USED (STATE SERIAL NUMBER OR ASSET NUMBER)

  • Make and Model:

  • Serial number or Asset Number:

DETAILS OF PERSON TESTING

  • Name:

  • Signature:

  • Date:

  • CIRCUIT DETAILS AT DISTRIBUTION BOARD
  • (1) Circuit Number

  • (2) Circuit Description

PROTECTIVE DEVICE DETAILS

  • (3) Protective Device BS (EN)

  • (4) Protective Device Type

  • (5) Protective Device Rating (A)

  • (6) Protective Device Breaking Capacity (kA)

  • (7) RCD Current Rating (mA)

  • (8) Maximum Permitted Zs (Ω*) * See note below

  • * Where the maximum permitted earth fault loop impedance value stated in (8) is taken from a source other than the tabulated values given in Chapter 41 of this Standard, state the source of the data in the appropriate cell for the circuit in the 'Remarks' cell (25) of the schedule.

CONDUCTOR DETAILS

  • (9) Reference Method

  • (10) Live (mm2)

  • (11) cpc (mm2)

TEST RESULTS

RING FINAL CIRCUIT CONTINUITY (Ω)

  • (12) r1 (line)

  • (13) rn (neutral)

  • (14) r2 (cpc)

CONTINUITY (Ω) (R1 +R2) or R2

  • (15) (R1 + R2)

  • (16) R2

INSULATION RESISTANCE TEST VOLTAGE

  • (17) Volts

INSULATION RESISTANCE (MΩ)

  • (18) Live - Live

  • (19) Live - Earth

POLARITY

  • (20) Checked

Zs (Ω)

  • (21) Maximum Measured

RCD

  • (22) Disconnection Time (ms)

  • (23) RCD Test Button Operation

AFDD

  • (24) Manual AFDD Test Button Operation

REMARKS

  • (25) Remarks

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