95% of the systems I've been in only required output loops on taps. TWC has 10 different industry standards they go by. And a bad habit of never telling anyone when it changes. Unfortunately stupidity has become the industry standard for CATV. Oh, and while we're at it, who thought up the stupid "Halo" thing. Does anyone with any knowlege of electricity actually believe that lightning will jump around an amp with a piece of copper bridged over it? LMAO!!