How to choose the electrical wire used in homes? Teach you to choose f - knoweasy

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How to choose the electrical wire used in homes? Teach you to choose from five aspects

July 12, 2021

When we understand the home installs the type of wire used, thickness, color, and other parameters, can finally take a listing into the market, began to choose and buy.By the wire, that most users once again received - so many wires, actually how to get high quality products home?In fact, the choose and buy wire basically see two aspects: conductor and insulation layer. As long as this two parts no problem, we prove that it is a good wire.


Come up with a wire, insulation of the wire strip, reveal the copper wire - that's the conductor. We can from two Angle to judge the merits of the conductor:

1. The color

Although they are called "copper ", they are not 100% pure copper and contain impurities in some way or another. The more impurities it contains, the less conductive a conductor will be. The amount of impurity contained in a conductor will generally be reflected in its color.

The best quality of copper is called the "red" or "copper" - as the name implies, this kind of copper color red, blue, purple, dark red.

The worse the copper is, the lighter it is, the more yellow it is. It is called brass. Some of the copper is pale yellow - this copper is already very high in impurities.

But that is not the worst, a few years ago by a recycled rough machining of copper, the whole is black, can't see the shadow of the red, yellow (rare) in recent years. The copper belong to the fake and shoddy products, absolutely not to buy it.

2. The thickness

 We first need to choose color, same color, can, by comparing the thickness to determine relative - when color clashes with the thickness, color priority in choosing (such as thinner, between red copper and the brass of coarser preference copper)

"The wire is the same, the thicker the wire is, the stronger the conductivity - when comparing the thickness, only the conductor should be compared, not the thickness of the insulation layer.


Wire outside that layer of rubber, is the wire insulation layer. It exists, can prevent the external factors on the conductor damage (conductor) of protection, and can protect the conductor after failure cause damage to the outside world (insulation, flame retardant). To judge a good insulation layer, usually can use the following three ways:


With handle gently caresses insulation surface, if the surface is coarse, prove production technology of insulation is poorer, prone to leakage failure, etc.

With her nails on the insulating layer, if a quick rebound, high insulating layer thickness and good toughness.


Take a wire, bent back and forth several times, and then beat wire direct observation. If the wire surface no traces that wire and toughness is better. If the wire surface have obvious indentation, severe white, prove less wire and toughness. Buried in the ground for a long time, it is easy to aging, crisp, easy to leakage in the future.


Continue to the wire burning, with lighter until the wire insulation fire. Start the time after closing lighter - if the wires can automatically within 5 seconds out, prove that wire has good flame retardancy. Otherwise prove wire flame retardant ability is not up to standard, when overload or circuit is easy to cause fire.

keywords:the electrical wire used in homes,electrical wire

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