Maka nchekwa megide oke ibu na obere sekit dị na sistemụ nkesa eletriki.
Jiri ya na nrụnye ụlọ, azụmahịa na obere ụlọ ọrụ mmepụta ihe.
Kwenye na IEC 6089B BS 3871 Ogo nchekwa: P 20
| Nọmba Ngwaahịa | Ọkwa Ampere | Voltaji enyere ọkwa (Vac) | # nke ogidi |
| BHP106 | 6 | 120-240 | 1 |
| BHP110 | 10 | 120-240 | 1 |
| BHP116 | 16 | 120-240 | 1 |
| BHP120 | 20 | 120-240 | 1 |
| BHP125 | 25 | 120-240 | 1 |
| BHP130 | 30 | 120-240 | 1 |
| BHP140 | 40 | 120-240 | 1 |
| BHP150 | 50 | 120-240 | 1 |