An electrical inspection needs preparation. The inspector from the accredited body compares the installation with its diagrams and measures what must be measured. When the documents are up to date and the panel is legible, the visit is short.
1. Diagrams that match reality
The RGIE requires a single-line diagram and a position plan of the installation. They must match what is actually installed: a circuit added without updating the diagrams is a classic finding.
- Each breaker in the panel appears on the single-line diagram with its rating, cable size and number of points.
- Each point on the plan carries its circuit reference.
- RCDs are shown with their sensitivity and type.
2. A labelled panel
Each module must be identifiable: one label per breaker, with the reference and the room served. Labels printed at a 17.5 mm pitch slide under the rails.
3. Residual current protection
A main RCD protects the whole domestic installation. Circuits in wet rooms, and those of certain appliances such as the washing machine, tumble dryer or dishwasher, require enhanced 30 mA protection. The RCD type matters too.
4. Earth and equipotential bonding
The resistance of the earth electrode is measured. Have the value ready and check the main equipotential bonding and, in the bathroom, the supplementary bonding.
5. Common mistakes
| Finding | Fix |
|---|---|
| Hob on a socket circuit | Dedicated circuit with suitable cable size |
| Too many sockets on one circuit | Split onto a new circuit |
| Breaker too large for the cable size | Rating matched to the cable |
| Socket in bathroom zone 2 | Move outside the zones |
The exact requirements are in the official text of the RGIE (Book 1), published by the FPS Economy. When in doubt, the reference remains the text and the advice of the accredited body.