We provide inspection activities, professional inspections and professional tests (revisions) of electrical equipment in the scope of E1, E2, E4, E5 – A, B, B1 in accordance with §9 of Act no.124/2006 Coll.

Practical examples of scope (OPaOS) revisions:

E5 Electrical connections to objects, machines and chargers for electric vehicles

E2B in objects like

  • Hospitals
  • Apartment and family houses
  • Office premises
  • Industrial operations
  • Business operations C
  • onstruction and exhibition electrical installations

E2A in objects like

  • Gas regulation stations
  • Mills and granaries
  • PHM gas stations

E1 high voltage electrical equipment

  • Transformer stations
  • 22kV distribution line

E1 – technical equipment without voltage limitation, including a lightning rod

E2 – technical equipment with a voltage of up to 1,000 V, including a lightning rod

E4 – electrical machine, device, switchboard

E5 – LV electrical connection NN


A – object without explosion hazard

B – object with explosion hazard

B1 – an object with an explosion hazard only in the scope of technical electrical equipment in the gas control station