| Dynodiad | Amp (A) | Folt (V) | Rhif Cat |
| Polyn Sengl | 10A | 250 | 66HWW110 |
| 10A/2 Ffordd | 250 | 66HWW110/2 | |
| 16A | 250 | 66HWW216 | |
| Pol Dwbl | 20A | 250 | 66HWW220 |
| 32A | 250 | 66HWW232 | |
| 40A | 250 | 66HWW240 | |
| 50A | 250 | 66HWW250 | |
| 63A | 250 | 66HWW263 | |
|
Polyn Triphlyg | 16A | 440 | 66HWW316 |
| 20A | 440 | 66HWW320 | |
| 32A | 440 | 66HWW332 | |
| 40A | 440 | 66HWW340 | |
| 50A | 440 | 66HWW350 | |
| 63A | 440 | 66HWW363 |