| BP |
Earth plug (13 amp type) with 10mm stud. No resistor. |
| BPR |
BP with 1 meg-ohm safety resistor. |
| BPE |
European earth plug. |
| BP2J |
Earth plug with 10mm stud and 2 jack sockets. All connections have 1 meg-ohm safety resistor. |
| BP3 |
Earth plug with 3 x 10mm studs. All have 1 meg-ohm safety resistor. |
| BPPO |
Earth facility plug with post. |
| BPPOE |
Earth facility plug with 10mm stud and M5 post. (European) |