Start by taking the green wire and connect it to the bare copper wire.

Tinned copper wire is just as conductive as bare copper wire, but the thin layer of tin helps the wire resist corrosion.

For thicker cables and wires, some scrappers will strip the copper wire to get bare bright copper wire.

The bare copper wires the ground wire, which is the safety part of the circuit.

The bare copper wire is the ground wire, which is the safety part of the circuit.

Since we couldn't find an uncoated copper wire at the hardware store next door, we had to make do with a silver-coated one.

This means that a bare wire of aluminum weighs half as much as a bare wire of copper that has the same electrical resistance.

Tinned copper wire is more expensive than its non-tinned counterpart and can cost as much as 30 percent more than basic, bare copper wire.

Since we couldn't find an uncoated copper wire at the hardware store next door, we had to make do with a silver-coated one.

The gap between the walls is filled with water and encloses a bare copper wire for earthing.

The bare copper wire is the ground and must not be covered.

When you apply a thin coating of tin to bare copper wire, either by dipping the copper in molten metal or by using an electric current to bind the tin to the copper, you create what is known as tinned copper wire.

The main grounding wire--usually a fairly large bare copper wire--is connected to the main grounding connection on the panel.

You’ll notice that there are two black wires connected to the switch, as well as a bare copper wire, which is the ground wire.

The black wires are the power (or “hot”) wires, the white wires are the neutral (or “return”) wires, and the bare copper wire is the ground wire.