E whakamahia ana te hua hei tiaki i te taumaha rawa me te ara iahiko poto i roto i te ara iahiko whakamārama, ā, e hangai ana ngā hua ki ngā paerewa GB10963 me BS3871.
| Auaha kua whakatauria|A) | Tau o te pou | Ngaohiko kua whakatauria | Te kaha pakaru |
| 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 |