Excessive bending, stretches or compresses twisted pairs, raises attenuation by 1–3 decibels (dB) and can make a 10 GbE (10 Gigabit Ethernet that supports 10 gigabits per second) link fail. Distorted twists increase near-end crosstalk (NEXT), especially at frequencies above 500 MHz. ter the cable has been placed in the raceway. When bent too sharply, helical metal tapes can eparate. guidance on cable installation. Each subsection, for example BS7870-4. 10, also has its own specific Annex A which provides more explicit nformation for that cable type. This is the. The bend radius for cables is often overlooked during project design, leading to signal performance issues, downtime, or reduced cable life expectancy. In tight installations, engineers/installers may be tempted to push the limits of the minimum cable bend radius and cite “it should be ok. ”. There is a common tendency to ignore bend-radius requirements when you are installing horizontal cabling at the wall plate and at the distribution frame.
[PDF Version]