What is the average square line (wire) what do we usually mean? How is it different? The
I am sorry to understand the wrong. This may not help you.
The wiring is far from the power supply so then the current through the wire voltage will drop is down, but this is not more costly because: the wire in the ideal state we think it is without resistance, but in fact Any wire of the material will have a certain resistance, but often very small, can be ignored, but a little electrical (also known as load) resistance is very small, the resistance of the wire will have an impact. Drop, that is, the voltage applied to the voltage on the electrical side of the small ground power, so the length of the wire that is more electric wire resistance is greater, so the partial pressure phenomenon is more serious, through a circuit current is even smaller by the power formula: P = U * U / R, in the case of the same power supply voltage, the resistance of the total circuit becomes larger due to the wire extension, so the power P will be reduced, so it will be less expensive. However, if the electricity rate It is necessary to work at rated voltage, then because the wire is longer after the need to increase the power supply voltage to offset the voltage drop in the length of the line, so that more costly.
3 * 1 * 0.8 means three 1 square and 0.8 square core cable, the following is a link to the library, please adopt the answer Thank you
4 port belongs to the IDE hard disk interface called the parallel port power interface SATA is a serial port called the serial power interface Some serial hard drive two power interfaces are to buy is the serial power cable
