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Electrical installation certificate (EIC) template and example
An electrical installation certificate (EIC) is issued for new installations, additions and alterations. Here is what the form must contain and how each part is completed.
As with the EICR, a valid EIC has to be on the BS 7671 model form and signed by the competent person, so treat a blank template as a guide to the layout rather than a certificate in itself.
What an EIC must contain
- Client details and the address of the installation
- Description and extent of the installation: new installation, addition or alteration
- The three signatures: design, construction, and inspection and testing, each with a name and date
- Supply characteristics and earthing arrangements at the origin: system type, Ze, prospective fault current, main switch
- Comments on the existing installation, where the work is an addition or alteration
- Recommendation for the next inspection
- Schedule of inspections and schedule of test results
How each part of the EIC is completed
A walk-through of the model form, with a worked example for a new garage supply:
| Part of the form | What goes in it (garage sub-main example) |
|---|---|
| Particulars: client, address, description and extent | Client name and address; “new installation: supply to detached garage”; the extent is the new circuit from the board, not the whole house |
| Supply characteristics and earthing | TN-C-S, 230 V, 50 Hz, Ze 0.28 Ω, PFC 0.82 kA, main switch 100 A |
| Particulars of the installation | Means of earthing (supply or earth electrode), maximum demand in amps |
| Comments on the existing installation | Anything about the board or supply the new work relies on, e.g. “RCD-protected board, adequate for the addition” |
| Schedules of inspections and test results | Every circuit: R1+R2 or Zs, insulation resistance, RCD times, polarity |
| Three signatures | Design, construction, and inspection and testing: each signed and dated, even when one person did all three |
The two schedules are where most hand-completed EICs fall down: a missing R1+R2 for one circuit is enough to make the certificate worthless to a building control body or an insurer.
The EIC's defining feature is the three signatures for design, construction, and inspection and testing. On a sole-trader job they are often the same person, but each role must still be signed for. SparkCerts builds the EIC to the model form with the schedules attached, so nothing is missed.
Common questions
What is the difference between an EIC and an EICR?
An EIC certifies new work (a new installation, addition or alteration) and confirms it complies. An EICR reports on the condition of an existing installation. Use an EIC when you have installed something, an EICR when you are inspecting what is already there.
Why does an EIC need three signatures?
BS 7671 separates design, construction, and inspection and testing. Each must be signed for, even when one person did all three on a small job, because each is a distinct responsibility.
Related: EIC explained · When a minor works cert applies instead · Certificate software
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