Each color has a particular purpose, and you should be aware that all cables, regardless of function or color, can carry a current at some point and should be handled with care.... "Black" wires are the power lines while "white" wires are the ones that connect one device to another. The term "black" and "white" actually refers to the material used to create the cable; therefore, any cable composed of black and white fibers is considered black-and-white cable.
The main difference between different colors of wire is how easily they can be damaged when exposed to heat or electricity. For example, red wire is more likely to burn when exposed to light, while blue wire is more likely to be affected by corrosion when exposed to oxygen in the air. It is important to take care not to touch any part of the cable without using protective gear because even if you don't get shocked, you could still cause damage to your electronics by exposing them to fire.
There are several things to consider before you decide what color wiring to use in your home theater system. First, make sure that any appliances or devices that receive power from these cables are also of a corresponding color.
Remember that all electrical cables can carry a current at some point, therefore handle each colored wire with the same care. If you have any doubts, choose a skilled expert to do the electrical work.
Electrically, the colors don't matter. A wire is a wire regardless of its insulation color. When dealing with greater voltages, the color of the wire itself may become important, however this is due to the type of metal utilized (aluminum vs. copper conductivity, for example). The insulation color on a wire is not significant electrically.
Thermally, the colors do matter. It is important that you match the electrical ground with its thermal ground. This ensures that no current can flow from one side of the cable to the other side without going through the ground. If they are not matched, you will have a problem with heat damage to the cable.
It is also important to match the mechanical grounds of different panels on a structure. For example, if there is a metallic panel and a plastic panel on opposite sides of an enclosure, they should be connected together. This prevents current from flowing into any plastic component and causing it to "light up" like a Christmas tree.
Finally, make sure that you connect the black lead of one circuit to the black lead of another circuit. This is called a "black tie" and it ensures that there are no short circuits between circuits.
There are many ways to screw up a wiring project, but using the wrong color of wire is certainly one way to go wrong!
The United States has its own wiring colors for electrical circuits. For 208 VAC three-phase, black, red, and blue are used; for 480 VAC, brown, orange, and yellow are used. Colors of Wiring: Electrical Wire Color Coding Requirements
|Line 1 (L1)||Black|
|Line 2 (L2)||Red|
Green for earth, red for live, and black for neutral The color coding of wires is green for earth, red for live, and black for neutral. These colors reflect the potential difference between a dead person and an active power source such as a wall socket. If you were to connect a white cable to either the red or green terminal on a household breaker panel, it would be very dangerous. The breaker would close immediately because both lines are now live and could cause serious injury or death if touched.
The term "neutral" actually comes from the word "engineer," since early electric circuits were built by engineers who wanted to make sure that no current was flowing through their work spaces. Before electricity was widely used, engineers needed a way to identify which parts of a large machine were not connected together, so they painted each conductor in the cable a different color (red, black, and white at first) and then kept track of which colors went where. Neutral was the name given to this third conductor when it was incorporated into public utilities networks in the late 1800s; before then, it was just called the fourth wire.
In modern homes, all three conductors are needed to transmit power from the panel to the various outlets and appliances. The black wire is always assumed to be ground, but this is not necessary for small currents.
Why are there multiple colors of wiring? The neutral wire is the blue wire, and its duty is to take power away from an item. The brown cable, sometimes known as the "live wire," is responsible for delivering power to your appliance. These two wires make a complete electric circuit when they are connected together. If you were to connect them to another device that needs electricity, such as a light bulb, those lights would now be part of the circuit and could possibly be on if you leave all the wires intact or could cause damage if someone tries to tamper with them.
If you were to remove either the blue or the brown wire from an outlet, it would no longer be safe to use because it would not be making a complete circuit anymore. Most outlets today are designed to work with three wires: black, white, and ground. The old two-wire outlets used to install by themselves before the era of code compliance still exist but are considered obsolete. They are not recommended for new construction because they are difficult to repair if one of them breaks. The same thing can be said about four-wire outlets which require the presence of a ground wire to be functional.
The purpose of dividing up wiring duties this way is so that if one of these wires gets damaged, it doesn't shut down the whole system.