InSky OPGW C part no.
Optical Ground Wire Central loose tube (C)

An excellent choice when low weight and a small diameter are more important than rated breaking strength (RBS) and short circuit current resistance. Often used to replace existing conventional 3/8 inch HS/EHS groundwire.


Optical fiber


Stainless steel tube filled with water-blocking gel


Stranded wires (aluminum-clad steel wires and/or aluminum alloy wires)


Stranded wires (aluminum-clad steel wires and/or aluminum alloy wires)

Up to 96 fibers

Aluminum-clad steel wires are corrosion-resistant

Optical ground wire (OPGW) shields high-voltage conductors from lightning strikes

Aluminum alloy wires provide conductivity for fault current

Crush — 571 lb/in
Fiber count up to 96
Rated breaking strength (RBS) (without SSLTs), lb 5620 … 47210
Maximum rated design tension (MRDT), lb 3372 … 28101
Cable diameter, in 0.315 … 0.709
Cable weight, lb/ft 0.134 … 0.827
Elasticity modulus (final), ksi 10153 … 23206
Short circuit capacity (initial temp 77°F), kA²•s 5...300
Short circuit current for 0.5 s, kA 2...20
Operating temperature -58°F … +185°F *-76°F…+185°F upon request
Installation temperature -22°F … +122°F
Transportation and storage temperature -58°F … +185°F
Minimum bending radius 20x cable diameter
Design life 50 years