Power line
device · 1891 · Electric age
Wires on towers for transmitting power over distance.
What it is made of
- Insulator — has part. Insulators on the towers.
- Copper wire — has part. Wires (often aluminium).
Principles and materials it uses
- Electrical resistance — uses. High voltage reduces resistive losses.
- Steel — is made of. The towers are steel.
- Aluminium — is made of. The conductors are aluminium with a steel core.
Where it is used
- Electrical grid — is part of. Power lines.
What it is a kind of
- High-voltage direct current — includes. A kind of power line.