The tools you take on site

The full Schedule of Inspection, split into ten sections, tickable on site as Pass, Fail or N/A with a note against any item.

Every item carries the BS 7671 regulation it comes from, and items that bear directly on safety are flagged so they stand out while you work down the board.

The dead-test sequence in the order BS 7671 Regulation 643.1 requires it, from pre-test checks through to earth electrode resistance on a TT system.

Working through the list in order is the point: continuity before insulation resistance, insulation resistance before polarity, and nothing energised until the whole sequence is signed off.

The live-test sequence after safe energising — loop impedance, RCD operation, prospective fault current, phase sequence, functional testing and completion.

Nine sections covering the tests that can only be done with the installation live, including the special-location checks and the documentation that closes the job out.

Build an Electrical Installation Certificate, a Minor Electrical Installation Works Certificate or an Electrical Installation Condition Report, then export a clean PDF.

Customer and installation details, supply characteristics, Ze and PFC at origin, circuit details, inspection items, observations and the overall assessment — held on device, synced through your own iCloud account, and exported as a PDF you can send from the van.

• EIC — new installations and work including a board or consumer unit replacement
• MEIWC — additions and alterations to an existing circuit
• EICR — periodic inspection of an existing installation
• Reusable engineer profile so your details are filled in every time
• Draft, complete and exported states, with a saved certificate log

What each classification code means, the action it demands, and worked examples of observations that attract it.

The reference you check when you are standing in front of something and are not certain whether it is a C2 or a C3 — and the one that decides whether the report comes out satisfactory.

Practice classifying real EICR observations, then check yourself against the correct code and the reasoning behind it.

Coding is the skill the 2391-52 tests hardest. The trainer drills the judgement rather than the definition — you can try the same scenarios on this site before you download.