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Question:

Power cable ZR-YJV-4 * 70 + 1 * 35 meaning

PCB wiring, is not the line the wider the better?

Answer:

Grounding wire you can use a 2.5-meter-long hot-dip galvanized angle hit the ground mud in the deep 1 meter deep, and then from this corner of the steel leads to a line This is the ground. The grounding of the lightning rod and the root angle can be connected together in the ground to increase the lightning current discharge area, but the ground part of the two ground can not be connected. I used to be professional to do mine grounding project.
Odf is a fiber patch panel, modf is wrong to read it, or else is the fiber patch panel
1-2 meters away from the base with 1.5-inch galvanized pipe length of 2 meters two, 2 meters from the ground into the ground, with galvanized steel strip welded together and leads to a head ground wire. In addition to the protection of ground grounding grounding lightning protection grounding should be done separately to achieve efficient and safe!

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