The white wire serves as the neutral wire, while the black wire serves as the positive wire and the green wire serves as the ground wire. For the ground, a bare copper wire can also be utilized. The white and black wires should be connected to each other at both the hot wire connection and the neutral wire connection.
The wiring diagram shows that you must connect the black wire from the garage breaker to the nut on the metal ground rod outside before you connect any other wires to the ground rod. This is necessary to prevent electrical problems with your car if there is no ground in your garage. If you do not do this, you could have a short circuit if you get water into the cable leading to the ground rod.
The ground rod needs to be deep enough so that it does not touch any soil or rock. The minimum depth for a ground rod is 1 foot, but it should be at least half that length because the conductor will reach deeper levels of soil when it is buried. The ground rod should be inserted into the soil perpendicular to the surface of the ground. It should be secured by wrapping it several times with a stainless steel wire until it is well embedded into the soil.
You should check the wiring in your home every few years for damage. Wires can become loose over time or due to excessive voltage, which could lead to an electric shock.
The black wire is the positive wire, the white wire is the negative wire, and the green wire is the ground wire. All electronics have some type of grounding system to prevent static electricity from accumulating on a single point and causing trouble. The metal case of most computers is enough of a ground for most people's needs, but you may see devices with multiple grounds. For example, some phones have a copper bottom plate that connects to earth ground.
All wiring in a house is either black or white. Any other colors should not be used as they can get confused with each other when connected to a black box. If you are lucky enough to have red, blue, or green wiring, then these will also connect to black or white wires depending on which side of the junction box they are on. For example, if there is a red wire leading into a junction box, this means that it is connecting one side of a circuit to ground. The black wire on the other side of the junction box is now the positive line and the red wire is the negative line.
Wires are usually marked with color-coded terminals to indicate their function - black for hot, white for neutral, and red for ground.
Typically, a white neutral wire connects to a silver-colored termination or white wire lead. A ground connection is almost always made by a green or bare ground wire, either to a ground screw on a device, electrical box, or appliance casing, or to a green wire lead. The term "ground" means the complete circuit is tied together and any current that flows in the conductor is returned back to its source.
The term "neutral" means that both ends of the cable are connected to it; there are no hot wires alone. Neutral conductors cannot be used to carry voltage: only live parts of the house wiring can provide power. Neutral conductors are usually black but may be red or white as well.
A dead part of the house wiring has no electricity flowing through it. It may be an empty space within a wall or floorboard where insulation has been removed, or it may be a metal box located somewhere in the yard or building with the metal inside exposed. This is called a ground rod or electrode. The function of the ground rod is to provide an alternative path for electrons to take if there is a problem with one of the other wires in the system. If you were to touch one terminal of your electric meter to the ground rod and then to the other terminal of your meter, your radio would work because electrons would be able to flow through the ground rod instead of being blocked by the metal box.