Good reading.
www.truecable.com
And
www.truecable.com

Calculating Ethernet Cable Overall Channel Length for Success
Consider this situation: An installer runs 290 feet of solid copper Ethernet cable and dutifully punches down both ends of the cable into patch panels and/or keystone jacks. The installer then plugs in some stranded copper patch cords at both ends, both totalling about 30 feet and turns the...

And

Q&A: Are YOU terminating your Ethernet cable all wrong? You probably are!
In this informative Q&A session, True Cable's Don and Dave share valuable insights on properly terminating Ethernet cables. Discover the common mistakes to avoid and learn about the best practices for achieving reliable high-performing connections.
