Why measurements, not visual inspection
The most dangerous electrical faults are invisible: damaged insulation in the wall, a broken protective conductor, an RCD that won't trip during an electric shock. None of these things are visible to the naked eye – but all are visible in measurements. Therefore, our rule is: we diagnose with measurements, not by eye. For scale: according to fire brigade data cited in the Wałbrzych safety report for 2024, 70 fires were recorded in residential buildings in the city, 9 of which were linked to defects in electrical devices or installations. Not every fire is electrical – but those nine could have been detected earlier with a meter.
Four most important tests
- Insulation resistance – checks whether the cable insulation keeps current where it belongs. A low value = damp, aged, or damaged cable. This test answers the question "is this installation still fit for purpose";
- Residual Current Device (RCD) test – the meter forces a controlled leakage current and measures at what value and how quickly the RCD trips the power. The TEST button checks the mechanics, the measurement checks the real protection;
- Fault loop impedance – answers the question of whether, in the event of a short circuit, the protective device will trip the circuit quickly enough. Too high a value means that the 'MCB' may trip too slowly or not at all;
- Continuity of the protective conductor and earthing measurement – whether every socket with an earth pin is truly connected to earth, and whether the lightning protection system fulfils its role.
How to read the report
A good report is not a table for the initiated. With every test, you will find three things: the measurement result, the required value (limit), and the conclusion — positive or negative. A negative result does not mean disaster; it means a specific recommendation: what to replace, repair, or investigate further. Our reports are digital, compliant with PN-EN standards, and always remain with you — also in the client portal.
When is it worth taking measurements?
- periodically — as part of the 5-year inspection;
- after renovation or installation alterations — before you enclose the walls;
- before buying a flat or house — especially an older one; this is the cheapest way to find out the real cost of the property;
- after flooding or dampness;
- when taking over a new flat;
- when the installation "behaves strangely" and the cause is not visible.
Upfront price, written results. We quote measurements before the visit — you know what you are paying for, and after the inspection, you receive a report and specific recommendations instead of generalities. Order measurements online.
