When the circuit is remodeled, the people facing the decoration company will be weak for a while, and the price will be more expensive than once. They do not understand these terms and are not very depressed. Therefore, here are some circuit modifications. Common nouns. 1, what is called strong electricity In the power system, the voltage below 36V is called the safe voltage, in other words, the voltage of the immortal (except heart disease); the voltage below 1kv is called low voltage; the voltage above 1kv is called high voltage. The line that is directly supplied to the user is called a distribution line. If the user's voltage is 380/220v, it is called a low-voltage distribution line, that is, the strong electricity in the home improvement (because it is the highest voltage for home use). Strong electric generally refers to the AC voltage is above 24V, such as lights, sockets, etc. in the home, and the voltage is 110V~220V. Household electrical lighting, electric water heaters, heaters, refrigerators, televisions, air conditioners, audio equipment and other electrical appliances are strong electrical equipment. 2. What is weak electricity The weak electrical wiring system is the fourth essential home infrastructure after water, electricity and gas. This is a basic job for the construction of a digital home and it is very important. The object of weak current processing is information, that is, information transmission and control. Its characteristics are low voltage, low current, low power and high frequency. The main consideration is the effect of information transmission, such as the fidelity, speed, and breadth of information transmission. ,reliability. In general, weak electricity mainly includes telephone lines, network cables, cable television lines, audio cables, video cables, audio cables, and so on. 3, common symbols represent meaning A (represents power); U (represents voltage); I (represents current intensity); R (represents resistance); W (represents work); P (represents power); t (represents time); K (quantity: thousands) m (unit of quantity: millimeter); μ (unit of quantity: micro); 1A=1000mA1mA=1000μA1KA=1000A; Ohm's law: U=IR, power P=UI, function W=UIt 4, how to count the number of squares Square is the nominal value of wire specifications specified by the national standard. The square of the wire is actually marked by the cross-sectional area of ​​the wire, that is, the area of ​​the circular cross-section of the wire, and the unit is square millimeter. Generally, it is divided into: 0.5, 1, 1.5, 2.5 , 4, 6, 10, 16, 25 and so on. A general electric wire of 10 (square millimeters) or less and a cable of 10 (square) or more are called. The number of squares in the wire is an oral term for the decoration of hydropower construction, and the square-metre wire that is often said is square millimeters. In general, the empirical load capacity is when the grid voltage is 220V, and the empirical load capacity per square wire is about 1 kilowatt. Each square of copper wire can carry 1-1.5 kilowatts of electricity, and aluminum wire (which is rarely used now) can carry 0.6-1 kilowatts of electricity per square. So an electric appliance with a power of 1 kilowatt is enough to use only one square copper wire. Specific to the current, short-distance transmission of copper wire generally can carry 3A to 5A of current. Good heat dissipation conditions are 5A/mm2, which is not good for 3A/mm2. Hydropower renovation air conditioning entrance decoration switch socket electrical lighting TV decoration decoration decoration company look good plate furniture decoration home Komatsu Engine Parts,Komatsu Engine,Komatsu Engine Spare Parts,Engineering Machine Parts JINING SHANTE SONGZHENG CONSTRUCTION MACHINERY CO.LTD , https://www.sdkomatsuexcavatorparts.com
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Renovation: explanation of common decoration terms in circuit reconstruction
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