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Abaxhasi beSpool
I-insulator esetyenziswa kuthungelwano lokuhambisa olusebenza kumbane ombane ophantsi yaziwa njenge-insack insulator. Le yokwambathisa ikwabizwa ngokuba yi-spool insulator. Ezi insulators zinokusetyenzwa kwiindawo ezimbini ezinje ngokuthe tye ngenye indlela ngokuthe nkqo. Okwangoku, ukusetyenziswa kwesi sigqibisi kunciphile ngenxa yekhebula elingaphantsi komhlaba elisetyenziselwa ukuhambisa.
