7 kilowatts of electricity with what specifications of the wire O (∩ _ ∩) O Thank you
Two cases; a non-inductive load, that is, no three-phase motor load. As a "pure resistance circuit" one, single-phase power, also 220V. According to Ohm's Law: P = UI7000 = 220II = 32A It is recommended to use 4 square copper wire. Second, the other is 7KW three-phase motor, also known as "three-phase inductive load" based on power type: P = 1.732UI * 0. = 1.732 * 380 * I * 0.75I = 14.2A recommended 2.5 square copper Line Note: If the line length is more than 100 meters. Proposed core area to rise to a level
Wire are the same ah, that is, the need to shield the video line, their difference is that the process is not material!
In principle is not recommended, the two signals are different, the required transmission conditions between each other with the same wire is difficult to achieve transmission requirements
Audio and video lines can be used as a wire. Such as the most commonly used analog video and audio lines, is the same. . commonly known as the AV line, that is, analog video audio cable, as shown in Figure, yellow and white three-color. . three lines of the interface and material is exactly the same, but through the color to distinguish between use. Not by color can also be used. . high-definition era, audio and video signals together through the number of transmission, no sub-line, the same line can be transmitted.
