How to choose household wire

Many people home decoration, casually buy a wire to the street to use, this is wrong. So, how to calculate the thickness of the wire? In general, the copper wire cross-sectional area of ??per square millimeter to allow current through 9 amperes, aluminum wire is 6 amps, this is the limit number, do not use it more than it. So how do we know how much electricity we use at home?

If your home has a rice cooker, a microwave oven, an electric kettle, a color TV, a refrigerator, plus lighting, washing machines, etc., can estimate the total power of about 4 kilowatts, divided by the number of kilowatts Voltage, resulting in a total current (approximate) of 18 amps. Well, copper wire with 2 mm2 is enough. However, the insurance factor should be increased, including the possible increase of electrical appliances, it is recommended to use the cross-sectional area of ??4 mm2 or more copper wire as the main line.

Socket how to arrange.

In the past, one or two sockets were installed in a house, and as the number of home appliances increased, the two were not enough, so most of the sockets were now installed in the house. However, not free to install, more and more good, not doing well, it is easy to go wrong. The first is the outlet of the outlet, we must use the junction box, the first reason is to make the hiring firm, the second is easy to find fault in the future.

In addition, the outlet most prone to problems, one bathroom, and second, the kitchen. If the home electric meter bearing small, or wire cross-section is not big enough, we must think of staggering the use of high-power electrical appliances, such as rice cookers and electric heating, electric oven, etc. Do not use at the same time.

Wire purchase.

At present, the market variety of wires, specifications, price chaos, the difficulty of consumer choice. General home decoration, commonly used 2.5 mm2 and 4 mm2 two kinds of copper wire, but the price, the same size of a plate, because of different manufacturers, a difference of 20% to 30%. As for the quality advantages and disadvantages, the length of compliance, consumers are more difficult to determine.

How to identify the pros and cons when buying wires

A look. See if there is no quality system certification; see the certificate is standard; see whether the factory name, site, inspection chapter, production date; see if the wire is printed on the trademark, specifications, voltage and so on. Also depends on the cross-section of the wire copper core, excellent product copper color light, soft color, otherwise it is defective.

Second test. It is advisable to repeatedly bend an electric wire head by hand, which is soft and good in anti-fatigue strength, elastic in plastic or rubber, and has no cracks on the electric wire insulator.