110 Block wiring

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 Question by Paul Aitkenhead posted 24 Sep 2001
 110 Block wiring
I'm trying to work with a 100-pair 110 wiring
block for the first time for a home project.
I wanted to form a bridge among many of the
four-pair blocks. To do so I stripped the jacket
off a few feet of Cat5E cable and ran the
four pairs in a serpentine pattern among the
bottom contacts of the four-pair blocks,
leaving the twists in each pair intact as best I
could. Is this a common and accepted practice?

Also, when I look onto one of the four-pair blocks
with the first pair (blue) on the left, should I
wire it as RT-RT-RT-RT or TR-TR-TR-TR ?
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 Answer by Roman Kitaev posted 27 Sep 2001
Hello, Paul!

Yes, it will work, although I would recommend to run bridging wire on the front side of the connecting blocks. It will make its possible removal much easier.

When terminating 4-pair cable onto a 110 connecting block, the termination sequence (seen from the front) is as follows:

White/blue (tip)
Blue (ring)
White/orange (tip)
Orange (ring)
White/green (tip)
Green (ring)
White/brown (tip)
Brown (ring)


We also publish the Residential Cabling Guide that may be very useful to you. It is available here:

http://www.cabling-design.com/resources/documents/residential.html

Best regards
Roman Kitaev, RCDD

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