- Safety Regulations of Substations and Transforming Substations and Switching Stations (Decree-Law no. 428/95 of 31/03/60, altered by Regulatory Decree no. 14/77 of 18 February)

- Safety Regulations for High-Voltage Electric Lines (Regulatory Decree no. 1/92 of 18/02)

- Safety Regulations for Low-Voltage Distribution Grids (Regulatory Decree no. 90/84 of 26/12)

- Safety Regulations for Facilities using Electricity (Decree-Law no. 740/74 of 26/12)

- Safety Regulations of Collective Facilities for Buildings and Entrances (Decree-Law no. 740/74 of 26/12)

- Electrical equipment used in an explosive atmosphere (Decree-Law no. 202/90 of 14/12).

- CEI Norms 479-1 and 479-2, 1994 – Effect of electric current on the human body

- CEI Norm 529, 1989 – 1 – Protection indices for the covering of electric equipment and materials

- CEI Norm 536, 1976 – Classification of electrical equipment regarding protection against electrical shock, in the event of an insulating defect

- EN Norm 50110-1, 1996 – Works in electrical facilities