Le mveliso isetyenziselwa ukukhusela ukugqithisa kunye ne-short circuit kwi-lightmination circuit kwaye iimveliso zihambelana nemigangatho ye-GB10963 kunye ne-BS3871.
| Umlinganiselo wangoku|A) | Inani lepali | I-voltage elinganisiweyo | Umthamo wokuphula |
| 6.10.15.20.30.40.50.60 | 1 | 120120/240 | 50005000 |
| 15.20.30.40 | 2 | 240/415120/240 | 30005000 |
| 50.60 | 3 | 240/415240/415 | 30003000 |