| 83331 | Electrical installation appraisal of agricultural buildings | |
| 83332 | Electrical installation appraisal of airfield runways | |
| 83332 | Electrical installation appraisal of bridges | |
| 83333 | Electrical installation appraisal of chemical and related facilities | |
| 83332 | Electrical installation appraisal of civil engineering works | |
| 83331 | Electrical installation appraisal of commercial buildings | |
| 83332 | Electrical installation appraisal of dams | |
| 83332 | Electrical installation appraisal of elevated highways | |
| 83332 | Electrical installation appraisal of harbours | |
| 83332 | Electrical installation appraisal of highways | |
| 83331 | Electrical installation appraisal of industrial buildings | |
| 83333 | Electrical installation appraisal of industrial plant and processes | |
| 83332 | Electrical installation appraisal of irrigation works | |
| 83332 | Electrical installation appraisal of local cables and related works | |
| 83332 | Electrical installation appraisal of local pipelines and related works | |
| 83332 | Electrical installation appraisal of long-distance communication lines | |
| 83332 | Electrical installation appraisal of long-distance pipelines | |
| 83332 | Electrical installation appraisal of long-distance power lines (cables) | |
| 83333 | Electrical installation appraisal of manufacturing constructions | |
| 83333 | Electrical installation appraisal of mining constructions | |
| 83331 | Electrical installation appraisal of non-residential buildings | |
| 83339 | Electrical installation appraisal of other construction projects | |
| 83332 | Electrical installation appraisal of outdoor recreation facilities | |
| 83332 | Electrical installation appraisal of outdoor sports facilities | |
| 83333 | Electrical installation appraisal of power plants | |
| 83332 | Electrical installation appraisal of railways | |
| 83331 | Electrical installation appraisal of residential buildings | |
| 83332 | Electrical installation appraisal of roads | |
| 83332 | Electrical installation appraisal of streets | |
| 83332 | Electrical installation appraisal of subways | |
| 83333 | Electrical installation appraisal of the automation of industrial processes | |
| 83339 | Electrical installation appraisal of traffic control systems | |
| 83332 | Electrical installation appraisal of tunnels | |
| 83332 | Electrical installation appraisal of waterways | |
| 83332 | Electrical installation appraisal of waterworks | |
| 54619 | Electrical installation services, other | |
| 86442 | Electrical machinery and apparatus manufacturing services | |
| 87152 | Electrical machinery and apparatus n.e.c., repair of | |
| 86550 | Electrical machinery n.e.c., installation of | |
| 83563 | Electrical systems, integrated, testing and analysis of | |