Appendix E: UTP Cablingxxx | xxx125
• Dress the cables neatly with cable ties, using low to moderate pressure. Do
not over tighten the ties.
• Cross-connect cables where necessary, using rated punch blocks, patch
panels, and components. Do not splice or bridge the cable at any point.
• Keep the UTP cable as far away as possible from potential sources of EMI,
such as electrical cables, transformers, and light fixtures. Do not tie the
cables to electrical conduits or lay the cables on electrical fixtures.
• Always test every installed segment with a cable tester. Toning alone is not
an acceptable test.
• Always install jacks so as to prevent dust and other contaminants from
settling on the contacts. The contacts of the jack should face up on the
flush mounted plates, or left/right/down on surface mount boxes.
• Always leave extra slack on the cables, neatly coiled in the ceiling or nearest
concealed location. Leave at least five feet at the work outlet side and 15
feet at the patch panel side.
• Choose either 568A or 568B wiring standard before beginning. Wire all
jacks and patch panels for the same wiring scheme. Do not mix 568A and
568B wiring in the same installation.
• Always obey all local and national fire and building codes. Be sure to firestop
all the cables that penetrate a firewall. Use plenum-rated cable where it is
required.
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