Broadband Applications & Construction Manual - Public - CommScope

Planning the Cable Run/Upper Floor
Visually inspect the outlet locations for electrical wires, plumbing, HVAC ductwork, windows and other impediments.
Use the interior walls whenever possible. This way, you avoid installation headaches like trying to push
cable through insulation or around windows, or reaching under a roofline with a drill.
In the example below, all of the outlets can be reached from the attic. The phone outlet in the home office can
also be reached from the exterior by running a cable up to the eaves and then across and down to the outlet location
(consider a coax/UTP combination cable for this location). For the interior CATV outlets, a home run back
to the NIU is preferred, but the CATV line can be split and continued.
Run the shortest distance possible, but avoid aisles and areas used for storage. You may need to run around the
eaves, or even clip cable along the inside of the roof and come down a pillar.
The attic is usually accessed from outside by running the cable up the corner of an exterior wall. Before you drill,
inspect the attic and check for any obstructions or clutter. Running cable up from the crawlspace or basement is
a better and far less obtrusive method of getting to the attic. There may be an existing chase, but you may need
to ‘fish’ the cable up and alongside plumbing
or HVAC ducting. See page 9.7 for
instructions.
If entering from the outside, drill your entry
hole at the roofline or slightly above it at
a slightly upward angle. Use a feed-thru
bushing to prep the hole (see page 9.4 for
details). Feed the cable through the bushing
and over to the drop; take more cable than
you’ll need. Remember to seal the bushing
after the cable is pulled into place.
Residential Interior Cabling 9.6
Planning and Pulling the Cable on the Upper Floor