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An Electrical Installation Certificate (EIC) certifies new electrical work: a new installation, a rewire, or work that includes a new circuit. It is not a condition report on existing wiring — that is an EICR, which covers a different job and a different point in the installation's life. The full EIC carries three signatory blocks — Design, Construction, and Inspection & Testing — because on larger or commercial jobs those roles are often held by different people or different companies, and each signs for their own part of the work. Where one person or firm has carried out all three roles, they can sign all three blocks themselves; the form does not require three different signatures, only that each role is accounted for.
A full EIC is accompanied by a schedule of inspections and a schedule of test results, so the certificate on its own is not the complete record — the schedules are part of it.
If the same person designed, built and inspected the work — the common case for a sole trader or a small firm's domestic jobs — the domestic short-form EIC-D is built for that and is faster to complete. The full EIC on this page is for work where the three roles are genuinely split, or where the scale or complexity of the installation calls for the fuller schedule format. See EIC (Domestic) if that is the closer fit.
This is the distinction that causes the most confusion in this trade. An EIC certifies work that is new: a new installation, a new circuit, a rewire. An EICR reports on the condition of an existing installation — nothing new was installed, the inspection is assessing what is already there. If the job is new work, it needs an EIC or EIC-D, not an EICR. See EICR for the condition-report case.
NexCert issues the full EIC alongside the domestic short form, EICR (domestic and commercial), Minor Works and the Domestic Visual Condition Report, from the same workspace. The engineer completes the work and the schedules on a phone or tablet, on site, with the form working offline and resuming if signal drops. Where design, construction and inspection are split across different people, each signs their own block from their own device — no one needs to be in the same place at the same time to complete the certificate. A supervisor review, where the workflow calls for one, happens remotely from a desktop. The finished certificate is delivered with an evidence trail: what was done, by whom, and when each signatory signed.
There are fields for your own NICEIC, NAPIT, SELECT or Gas Safe registration number, at both company and individual engineer level, on every certificate NexCert issues.
An EIC is one of six electrical certificate types NexCert ships under BS 7671:2018+A4:2026: EIC (full form), EIC-D (domestic short form), EICR domestic, EICR commercial, Minor Electrical Installation Works Certificate (MW), and the Domestic Visual Condition Report. If the work is an addition or alteration that does not extend to a new circuit, that is Minor Works, not an EIC — see Minor Works.
/ FAQ
No. If you carried out the design, the construction and the inspection and testing yourself, you sign all three blocks as the same person. The form exists to account for each role, not to require three different individuals.
No. An EIC certifies new electrical work — a new installation, a new circuit, a rewire. An EICR reports on the condition of an existing installation at a point in time. NexCert issues both, as separate certificate types.
The full EIC has three separate signatory blocks for Design, Construction and Inspection & Testing, typically used where those roles are split or the job is larger or commercial. The domestic short form (EIC-D) has a single signatory block, for the common case of one contractor carrying out and certifying their own domestic work.
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