How To Install Outdoor Fiber Optic Cables In Underground Ducts And Innerducts
:: Duct/Innerduct materials and colors:
Fiber ducts are usually made from HDPE (high-density polyethylene), PVC or other compound. They are usually in black or gray. Fiber innerduct is usually orange or yellow.
:: Why usually fiber ducts and innerducts are corrugated?
Fiber ducts and innerducts are corrugated to provide the following benefits:
1. Decreasing pulling tensions during installation
2. Very [...]