If you mean a bare copper wire, that is the "ground" wire.
The recommended wire size for a 125A electrical circuit is typically 2/0 AWG copper wire.
The recommended wire size for a 200A electrical circuit is typically 2/0 AWG copper wire.
For a 60 amp electrical circuit, the appropriate size of copper wire needed is typically 6 gauge.
The appropriate wire gauge for a 100 amp electrical circuit is typically 3 AWG copper wire.
The recommended wire size for a 125 amp electrical circuit is typically 2/0 AWG copper wire.
The recommended wire size for a 75 amp electrical circuit is typically 6 AWG (American Wire Gauge) for copper wire.
The recommended wire size for a 90 amp electrical circuit is typically 4 AWG (American Wire Gauge) for copper wire.
The ground wire in a circuit is typically colored green or bare copper. It is used to safely direct excess electrical current to the ground to prevent electrical shock or damage to the circuit.
The recommended wire size for a 100A electrical circuit is typically 3 AWG copper or 1 AWG aluminum.
Mainly copper for the wire, pvc for the insulation.
The appropriate wire size for a 100 amp electrical circuit is typically 3 AWG copper or 1 AWG aluminum.
The recommended wire size for a 100 amp electrical circuit is typically 3 AWG copper or 1/0 AWG aluminum.