The electrical trade is one of many trades that use conductors for projects.
All of them.
sertgyhujik
to conduct the current
Each telephone line uses only two conductors.
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Wired
Non metals are used as insulators (poor conductors)
allow current to flow in one direction
Serial ATA (SATA)
A conductors baton.
Serial ATA (SATA)
It obviously uses conductors to carry electricity through the system however non-conductive material is used for the reason of safety, organization of electrical components, and mechanical work.