Q:Is the cable head made of every building?

First, the cable production and installation of each building has. Second, the cable terminal set of waterproof, stress control, shielding, insulation in one, with good electrical and mechanical properties, in a variety of harsh environmental conditions for long-term use. With the advantages of light weight, easy installation and so on. Cable terminal is widely used in electric power, petrochemical, metallurgy, railway ports and construction and other fields. Third, the production process: including the following: . cut off the excess cable; . the cable protective layer of the stripping; . conductor connection; . wrapped around insulation (or shrink pipe); . install the connector shell; . ; . for sealing treatment.

Q:6 square cable up to how many air conditioning (1.5P)

1 square millimeters can flow 4A current, 1KW380V, then the current is about P = UI about 2.6A7KW, 380V, then the current is about 18A, each with the line to share 18/3 = 6A2.5 square mm of copper on it. Of the area need to take . probably 6 level. V is probably 7KW220VI = p / u = 7000/220 = 31A. Then need 10 square millimeters of copper.

Q:5 air conditioning can be used 4 square cable

Lengthened low voltage side, the line resistance increases, the voltage drop increases. Reduced load capacity. So that the router due to insufficient supply voltage and can not work properly. It is not allowed to use 9V power supply. Voltage is too high, the router part of the internal power supply increased power, heat increased, it is possible to burn the router. It is necessary to extend the power cord, I suggest you extend the power supply side (220V one end) safe and reliable. Increase the voltage to increase the supply current, in the electrical working voltage range (with the electrical work voltage range) is allowed, too low electrical appliances can not work properly. Too high there is the risk of burning appliances, according to your actual situation, marked 5V0.2A that the router works at rated voltage, so the way to improve the supply voltage is not applicable. So you can only improve the power supply power (that is, you say to increase the power supply current rather than voltage). With the reserve power, it will provide enough current at the rated voltage (the router as a resistor, from I = U / R, you can know the danger of increasing the voltage) need help please message

Q:Can the main cable be aluminum cable? And explain why, thank you!

Reply to the landlord: I read a part of the literature, more Google is aware of the following part may be your reference weak construction specifications 1

Q:1000 kW 600 m cable to use much

Such a large load so far away, can only be transported with 10KY, near the installation of the transformer Caixing, if the 380V transmission, cross-sectional area, high cost, loss of large, not worthwhile. 10KV high-pressure delivery, current 55A, with 25mm? copper cable 35mm? aluminum cable delivery on it. If the 380V transmission, according to the line voltage loss simple calculation formula △ U% = PL / CS take △ U% = 5 copper cable S = PL / CS △ U% = 1000X600 / 77X5 = / 385 = 1558mm? aluminum cable S = PL / CS = U06 / 46X5 = / 230 = 2307mm? Line voltage loss △ U Simple calculation formula △ U% = PL / CS △ U% - Percentage of voltage loss P - Active power of conveying (Kw) Distance of L- M) C-constant, aluminum single-phase 8.. aluminum three-phase four-wire 46; copper single-phase 12.. copper three-phase four-wire 77S-conductor cross section (mm?) (quoted from "electrical entrance permit test low pressure Class theory "" electrical engineering basis ")

Q:How do I ask for cable prices? How many tons is one or more?

As long as the line connected to the corresponding location, that is, audio cable audio and video cable, video cable can be used with the video line.

Q:Does anyone know the "line buckle" classification (including shape / size / material / has been some commonly used size!) Line deduction is a hardware products! For daily necessities!

If you want to ensure that the transmission medium does not cause the signal to cause attenuation and interference, fiber transmission or balanced cable transmission is the best solution. If you need fiber transmission, the cost is high because you need to buy digital fiber converters and digital audio decoders and related equipment, but this can be to the maximum extent to ensure the integrity of the signal and the smallest noise interference. If you want to use low-cost transmission can also be used directly to the cable transmission, but must use a balanced interface for transmission, and with 2-core shield or 3-core, 5-core shielded cable for transmission. This can also ensure the clarity of the signal to the maximum extent, but do not eat hungry thirsty 丨 Chicken check blood sausage is too long. No matter how good the cable will be attenuated, the size of the attenuation will directly affect the signal quality and signal integrity. So the transmission distance with the balance line can not be too far. More than two kinds of transmission methods than the existing single-line transmission is much better, if you are a fever-level players, I suggest you use fiber transmission. But if your power amplifier or your source signal to noise ratio is not high, I do not recommend you use fiber transmission, because even if the quality of fiber transmission no matter how good your source is not high, then it does not make sense The

Q:How much of the cable with the switch?

The switch is not selected according to the cable and is selected according to the current. The cable is determined by the size of the power (converted to current) and the distance from which the distance is far. The greater the power distance, the greater the cross-sectional area of the required cable. For example: 15KW motor selection cable current I = P / 1.732UcosΦ = 15 / 1.732 / 0.38 / 0.8 = 28A if it is close (within tens of meters), copper cable 6 square millimeters, aluminum cable 10 square millimeters. If it is in the distance (a few hundred meters), copper cable 10 square millimeters, aluminum cable 16 square millimeters. If it is long distance (close to kilometers), copper cable 16 square millimeters, aluminum cable 25 square millimeters. The switch is regardless of distance, completely based on the load current to choose, generally according to the load current of 1.5 times to 2 times to choose.

Q:25 square copper cable how much money one meter?

3000w electrical work at 220V voltage is about 13.6A (current = power divided by voltage). Copper core line of the working current is generally a square 4-6A. That is to say you use 3-4 square power cord more secure.

Q:What is the meaning of PG + digital markings for electrical wiring?

Will the general power cable control cable can do the largest square...