What is innerduct conduit?
What is innerduct conduit?
What is Innerduct? Innerduct is smaller conduit (or tube) used to subdivide large ducts for the placement of optical fiber cables in the underground conduit system. With the advent of small diameter fiber optic cables innerduct was developed to better utilize underground conduit space.
Does fiber need to be in innerduct?
Innerduct should be installed as straight as possible since twists can increase cable pulling tension which in turn can cause reliability issue. Fiber cable filling ratios requires that high fiber counts in prediction of future needs. On cable jacket can be more densely packed with fibers than multiple cable jackets.
Does fiber optic cable need to be in conduit?
Fiber optic cables should be placed in their own dedicated ducts or trays. Do not mix copper cable and fiber cable in the same ducts or trays. After the fiber optic cable is installed into a duct or innerduct, end plugs should be installed to provide an effective water seal.
How do you pull an innerduct through conduit?
4) When pulling innerduct through conduit, use cable-pulling lubricant to ease the pulling tension. Field trials have shown that lubricant allows you to pull four times further with the same pulling tension.
How much does a reel of 2 HDPE weigh?
Applicable Material Standards and Dimensional Specifications
| Polyethylene SDR 13.5: Meets Material and dimensional requirements of ASTM D3035 | ||
|---|---|---|
| Nominal Duct Size | Outside Diameter | Weight Per 1000 Ft. |
| 1-1/2″ | 1.900″+.012″ | 343 lbs. |
| 2″ | 2.375″+.012″ | 531 lbs. |
| 3″ | 3.500″+.012″ | 1151 lbs. |
Is HDPE the same as PVC?
PVC is a fairly durable vinyl polymer while HDPE is a thermoplastic made from petroleum. They are both considered plastics. When comparing failure ratings, PVC has shown to be higher than HDPE. PVC has a rating of one in 48,650 events compared to HPDE with one in 10,000,000.
Can I run an optic fiber and electrical cable in the same conduit?
Conductive optical fiber cables shall not be permitted to occupy the same cable tray or raceway with conductors for electric light, power, Class 1, non–power-limited fire alarm, Type ITC, or medium-power network-powered broadband communications circuits.
Can I install fiber optic cable myself?
Since installing fiber most often requires laying a new cable and setting up specialized equipment, some fiber providers do not give the option for you to self-install fiber internet. You must have a technician come to your home to set it up for you, which can be very expensive.
How do you pull an Innerduct?
Notch the innerduct, pull the string into the notch, tightly wrap the string around the innerduct, and then tie it off. Trim excess string, and cover the wrapped string with tape to protect it during the pull.
How do you use an Innerduct?
Use innerduct to protect fiber cables inside buildings
- Check the local building code to make sure you can use nonplenum-rated innerduct in the riser shaft.
- Route the innerduct through the core hole on each floor, cutting it at the point of termination of the fiber cables.
How big is an innerduct for a fiber optic cable?
The most popular fiber optic innerduct sizes are 1” (25.4mm) and 1.25” (31.8mm). Fiber cables with a maximum diameter of 1” (25.4mm) can be pulled in 1.25” innerduct. The general idea is that a fiber cable can fill no more than 60~70 percent of the area of an innerduct.
How big is a 100mm fiber optic conduit?
100mm diameter conduits are the most popular. As a rule of thumb, 2~4 pcs of 1” (25.4mm) innerduct can be pulled through a 100mm conduit. The most popular fiber optic innerduct sizes are 1” (25.4mm) and 1.25” (31.8mm).
Why is it important to install fiber innerduct?
Without it, future fiber cable pulls can entangle existing operating fiber cables and cause service interruption. Innerduct should be installed as straight as possible since twists can increase cable pulling tension which in turn can cause reliability issue.
Which is better innerduct or cable filling ratio?
Innerduct should be installed as straight as possible since twists can increase cable pulling tension which in turn can cause reliability issue. Fiber cable filling ratios requires that high fiber counts in prediction of future needs. On cable jacket can be more densely packed with fibers than multiple cable jackets.