| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | electrical sockets | European electrical engineering | Type C and Type F sockets are commonly used in European electrical engineering. | 1 |
| 2 | frequency | European electrical engineering | The standard frequency for household electrical systems in European electrical engineering culture is 50Hz. | 1 |
| 3 | plug polarity | European electrical engineering | In European electrical engineering, plug polarity is standardized and consistent across the region. | 1 |