Why run wires colored insulation

Color coding of wires - it is not a whim of the manufacturer, and adherence to the requirements of normative documents, namely the SEP. Indeed, this approach significantly reduces the error rate at the time of posting mount. As well as it facilitates the operation of the process and possible repairs in the future. In this article I will discuss the details color-coded strands.

In most cases the veins are painted across the length of the conductor, but also marking only at the ends is quite acceptable and lived in soldering points, in such cases, use a specialized Heat-colored or multi-colored electrical tape normal.

Colored tires in a three-phase network

Not only the so-called "low" side has a color marking, but also the high side, namely, the tire also differ in color. Thus, phase "A" is painted in yellow coloring, phase "B" - green color, and the phase "C" is painted in bright red.

What color core insulation in the DC network

In addition to the familiar for all of us recess also has a network formed at constant current. So, postoyanke operate trams, trolleys, cranes, forklifts and some protection at the substations.

In this network there are only two conductors, referred to as L + and L -. Earlier positive lead was red, and negative was blue.

But in the normative document GOST P 50462-2009 color markings "postoyanke" has changed and now -Brown L + and L - - gray.

But, as we move on.

What color is isolated protective earth and the neutral conductor

We continue with you to explore the color-coded and now before us zero and protective conductors. Thus, the neutral conductor N - highlighted in blue. But protective earth conductor PE stands in the yellow-green color.

But combined the neutral and the protective conductor PEN is endowed with the following colors: virtually the entire length of it blue and only at the ends in the joints marked yellow-green bands, or vice versa main color is yellow-green, and at the ends blue.

Well, now go directly to the phases

If we refer to the technical documentation, then we'll see recommendations for color phase conductors. So that the phase can be the following colors:

Just be sure to take into account that if odnofazka is an offshoot of the three-phase network, it is important to observe the color match. That is, there, and there should be a phase of the same color.

If you have a cable made in a single color, then be sure to mark where the phase, and where zero with colored tubing or electrical tape.

Well, if you purchase the material for wiring, then make sure that the cable was purchased by a single sample, this not only facilitate the installation, but also allows much faster and better service network during the repair or modernization.

Important. The theory - it's great, but the reality is different. Not all electricians follow the rules of the SAE, so always should be checked, where the phase or zero with the help of instruments. Color is used only for rapid determination. A final decision should be put only device. Even acquiring a new cable, it will still need to ring to make sure the correct color coding. From marriage no one is immune.

So, summing up, we can conclude that when working with the network need to be as vigilant and be sure to check all personally and trust do not need to wire colors, and readings. Thanks for attention.

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