"Power engineering cable design specifications" 5.1.3 provides: cable group installed in the same channel in the same side of the multi-layer bracket should be arranged according to the voltage level from high to low power cables, strong to weak control and signal cables, The order of the communication cables. Ask the different levels of cable laying, why high-voltage cable laying in the upper? Ask the big god Q & A! More
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National building quality standards require strong electric power must be separated, using different channels
Such as lightning rod cited as a line, you can use single-core high-voltage cable, you can also set the metal pipe laying! The reason is simple: lightning is static, not alternating current! Only AC can pass through the capacitance between the cable core conductor and the metal tube! Therefore, the transmission of AC power is not allowed to use a single core armored cable or wear pipe laying!
