The tube is inserted into a stainless steel, aluminum, or aluminum-coated steel tube, with some slack length of fiber allowed to prevent strain on the glass fibers. 26 mm 2 (10 AWG) ground wire must be used, and in all other markets a 6 mm 2 must be used. The installation of OPGW/OPPC with incorporated optical fibers is subject to the accident prevention regulations that pertain generally in the country involved and to the general rules for laying cables as defined in DIN 48 207 and EN 50182, Appendix E or ANSI/IEEE Standard 524- 1980. An optical ground wire (also known as an OPGW or, in the IEEE standard, an optical fiber composite overhead ground wire) is a type of cable that is used in overhead power lines. This Applications Engineering Note (AE Note) discusses conventional bonding and grounding practices for conductive fiber optic cable and hardware installations within the scope of the National Electrical Code (NEC). The typical construction of OPGW used in TasNetworks transmission network is shown in Figure 1 below:.
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