In the course of a technical inspection, a qualified specialist assesses visually the condition of the installation, reviews the documentation and the reports of test and inspection measurements available about the installation, and if necessary then performs additional inspection measurements of the electrical installation. All this information is taken as a basis for the inspector to make a decision about the condition of the installation. If the installation is in order, then the inspector issues to the owner the relevant certificate. If the installation is not in order, then the inspector issues to the owner a list of discovered shortcomings, on the basis of which the installation should be fixed.

The owner of an electrical installation is required to ensure that the electrical installation is used purposefully, including timely technical inspection of the electrical installation. The purpose of the technical inspection is to assess the safety of the electrical installation and if necessary then to assess the conformity of its operation to the requirements prescribed in the Electrical Safety Act. Technical inspection must be performed for every electrical installation before it is commissioned, and in prescribed cases and with prescribed frequency also after the commissioning. An electrical installation may be commissioned only after passing successfully a technical inspection and getting a proper certificate proving the conformity of the electrical installation.