| 220 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1806 | K7766 | BRITISH STANDARDS INSTITUTION |
| HTE9306-017 | K2523 | EATON LIMITED |
| BS1806-220 | K7766 | BRITISH STANDARDS INSTITUTION |
| BSM48-220 | K7766 | BRITISH STANDARDS INSTITUTION |
| HTE9306-017 | U1918 | MISSION SYSTEMS WIMBORNE LIMITED |