If you have problems with your grounding, you should always resolve them yourself with your home electrician.

Breaches related to existing grounding are never the responsibility of STROOHM! This includes problems such as grounding interrupters or spreading resistance. For this, please contact your own electrical installer. Once this has been corrected, please notify STROOHM.

Problems with your grounding may not come to light until the mandatory inspection. Although your grounding seemed fine, in reality it may be different. The installer does not change anything about the grounding itself; the inspector only measures the grounding resistance. This physical value, determined by law in the General Regulations on Electrical Installations (AREI), may vary slightly.

Especially in homes where the earth resistance is close to the legal limit of 30 ohms, this value can fluctuate, for example due to weather changes.