A line conductor is the energized phase wire in an electrical circuit, distinct from neutral or earthing conductors. It operates at a designated potential relative to ground and is responsible for delivering power. In three-phase systems, these are designated as Line 1, Line 2, and Line 3.
Make sure you verify the voltage on each line conductor before you close the isolator.
Depending on the region, line conductors are color-coded to distinguish them from the neutral and earth.
Also heard as
- phase conductor
- line wire
Do not mix it up with
- Neutral conductor: The line conductor delivers power at full voltage, while the neutral conductor provides the return path at near-zero voltage.
Related terms
Conductor
A physical material or wire designed to carry electric current with minimal resistance.
Neutral conductor
The wire in an alternating current system that provides the return path for load current.
Live
Connected to a source of voltage, or describing a conductor meant to be energised in normal use.
Phase
A single distinct oscillating voltage or current in a multi-conductor electrical system.