Suspend a lightning arrester between the horizontal crosspieces of the cabling rack. Cut the feeder a proper length apart according to the requirements for lightning arrest position in the engineering design drawings.The lightning frame is the discharge ground of a feeder lightning arrester. It is located physically indoors. It is actually a part of the earthing system of the antenna and feeder system. The lightning arrester is on the lightning frame and in continuity with the frame. Insulate the lightning frame from the cabling rack at a point about 1 m inside the feeder window entry. Lengthen the distance if it is difficult to achieve that. However, the point shall be as near as possible to the feeder window. Connect the earthing cable of the lightning frame straight through the feeder window to the outdoor copper earthing bar.Lay the feeders of one sector in one row and arrange all the rows in consistent sequence when the feeders enter the room in the direction parallel to the cabinet or opposite to the cabinet rear. Lay the feeders of one section in one column and arrange all the columns in consistent sequence when the feeders enter the room in the direction opposite to the cabinet front
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