Also see:
8.1.68.2.1.7 Electrical installation requirements
The electrical installation shall be in accordance with relevant regulations.
Electrical installations should comply with BS 7671 ‘Requirements for Electrical Installations’.
Where parallel electrical generation occurs, inverters should have a relevant Engineering Recommendation G83/2 type test certificate and comply with all other parts of ER G83/2 for standard installations. Larger installations should comply with ER G59/3-2.
The electrical installation should be capable of being isolated from all other electrical sources when required, for maintenance or testing.
LZC technologies which generate electricity and are connected to the mains should automatically disconnect when there is a mains power failure. This is to prevent them from feeding the network or local distribution system during a planned or unscheduled loss of mains supply. This is known as ‘islanding’.
The inclusion of any lightning protection should be installed in line with the following standards listed in Table 3.
Table 3: Lightning protection standards
| BS EN 62305-15 | Protection against lightning |
| PD 62305-2: 2014 | Flash density map 2014. Supplement to BS EN 62305-2 |
| BS EN IEC 62561-1 | Lightning protection system components |
| BS EN IEC 62561-2 | Lightning protection system components |
| IEC 60068-2-52 | Environmental testing: Salt mist, cyclic (sodium chloride solution) |
| IECISO 6957 | Copper alloys: ammonia tests for stress corrosion resistance |
| ISO 22479 | Corrosion of metals and alloys – sulfur dioxide test in a humid atmosphere |
Last updated: 2nd January 2024