Since the rod type and stress conditions on the overhead line are different, the method of fixing the wire on the needle insulator or porcelain crossbar is also different, for example:

(1) On the linear pole, the wire should be fixed in the top groove of the needle insulator or upright porcelain crossbar; if it is a horizontal porcelain crossbar, the wire should be fixed in the end edge groove.

(2) On angle rods with a slight rotation angle (below 30°), the wires should be fixed in the edge groove of the pin insulator outside the angle.

(3) On the straight-line spanning rod (commonly known as diamond rod), the wire should be fixed in the top groove of the needle insulator, and the wire attached to the edge should be fixed in the edge groove on the inner side of the needle insulator (the pole side), and the wire must not have an angle at the fixing point; the wire attached to the intermediate wire should be fixed in the wire slot on the outer side of the needle insulator.

(4) The wires of 1 kV and below can be tied into a single cross shape on the needle insulator, while the wires of 1 kV and above must be tied into a double cross shape.

(5) Aluminum stranded wire or steel core aluminum stranded wire should be wound around the fixing of the porcelain piece (the strand is 1 mm thick and 10 mm wide). The winding direction is the same as the stranded direction of the outer layer of the wire. The winding length should be exposed at both ends of the fixing point to avoid damage to the wire during operation.