Why measurements, not visual inspection
The most dangerous installation faults are invisible: damaged insulation in the wall, a broken protective conductor, an RCD that will not trip in the event of an electric shock. None of these things can be seen with the naked eye - each is visible in measurements. That is why 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 in residential buildings were recorded in the city, of which 9 were linked to defects in electrical appliances or installations. Not every fire is electrical - but those nine could have been searched for earlier with a meter.
Four most important tests
- Insulation resistance - checks whether the cable insulation keeps the current where it belongs. A low value = damp, aged, or damaged cable. This test answers the question "is this installation still fit for operation";
- 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 supply. 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 circuit breaker may trip too slowly or not at all;
- Protective conductor continuity and earthing measurement - whether every socket with a pin is actually connected to the earth, and the lightning protection system performs its role.
How to read a report
A good report is not a table for the initiated. With every test, you will find three things: measurement result, required value (limit) and conclusion - positive or negative. A negative result does not mean a disaster; it means a specific recommendation: what to replace, repair or test more thoroughly. Our reports are digital, compliant with the requirements of PN-EN standards and always stay with you - also in the customer panel.
When is it worth doing measurements
- periodically - as part of a 5-year inspection;
- after renovation or modifications to the installation - before you cover up the walls;
- before buying a flat or a house - especially an older one; this is the cheapest way to find out the real cost of the property;
- after flooding or dampness;
- upon handover of a new flat;
- when the installation "behaves strangely" and the cause is not visible.
Price upfront, result in writing. We quote measurements before the visit - you know what you are paying for, and after the test you get a report and specific recommendations instead of generalities. Book measurements online.
