Electrical compliance upgrade in Luxembourg: a safe, compliant and documented installation

The situations that most often bring us to a client:

• Buying or selling an older property: an inspection before signing prices what needs doing.
• After a claim — water damage, surge, small fire — and at the insurer’s request.
• Extension or renovation: kitchen, bathroom, attic conversion, annex.
• A new heavy load: EV charger, heat pump, air conditioning.
• A request from a control body, a building manager or an employer for business premises.
• Letting a property: occupant safety and landlord liability.
• A consumer unit without RCDs, screw fuses, unearthed sockets: the tell-tale signs.

The inspection follows a fixed list, the same for everyone, with measurements — not a mere visual check:

• 30 mA residual-current protection on each group of circuits, and its actual trip response under test.
• Earth electrode, resistance value, equipotential bonding in bathrooms and on pipework.
• Conductor sizes against protective devices and cable run lengths.
• Dedicated circuits: oven, hob, washing machine, water heater, freezer.
• Bathrooms: zones, ingress protection ratings, suitable accessories.
• Consumer unit: spare capacity, circuit labelling, diagram, fixing, condition of terminations.
• Accessories and wiring: earthed sockets, accessible junction boxes, obsolete or exposed cables.
• Insulation resistance, earth continuity and fault-loop measurements.

The inspection takes place on site with our test instruments. You receive a written report that grades every point on three levels: dangerous (fix without delay), non-compliant (to schedule), recommended (comfort or future-proofing). The accompanying quote is itemised line by line, so you decide what to do now and what to plan.

The work is carried out by a State-licensed electrician, tested, then documented: a certificate of conformity for the work done and the consumer-unit diagram. Where an approved control body has to be involved — commercial building, installation acceptance, insurer’s requirement — we prepare the file and attend on inspection day.

A compliance upgrade is not necessarily a full rewire. In most houses from the 1970s to 2000, replacing the consumer unit, adding RCDs and reworking the earthing covers the bulk of the risk. A full rewire is needed when the cabling itself is at fault — cloth-insulated conductors, aluminium, no earthing throughout — and is then handled room by room as part of a renovation.