| from surges | 6 | other |
| short-circuit | 4 | other |
| from inverse voltage | 4 | other |
| output → be → protected | 16 |
| output → be not → protected | 4 |
| negative | neutral | positive |
| 0.153 | 0.726 | 0.121 |
| Raw frequency | 20 |
| Normalized frequency | 0.338 |
| Modifier score | 1.000 |
| Perplexity | 305.874 |