| Subject | English | Bulgarian |
| environ. | electrotechnical equipment All the equipment connected with the technological use of electric power | електротехническо оборудване (Цялостната апаратура, свързана с технологичното използване на електрична енергия) |
| environ. | electrotechnical industry A sector of the economy in which an aggregate of commercial enterprises is engaged in the design, manufacture and marketing of machinery, apparatus and supplies for the generation, storage and utilization of electrical energy, such as household appliances, radio and television receiving equipment, and lighting and wiring equipment | електротехническа промишленост |
| construct. | electrotechnical niche | електротехническа ниша |
| construct. | electrotechnical recess | електротехническа ниша |
| construct. | electrotechnical work | електромонтажни работи |
| tech. | European Committee for Electrotechnical Standardization | Европейски комитет за стандартизация в електротехниката |
| gen. | International Electrotechnical Commission | Международна електротехническа комисия |