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Going through an exterior wall – CommScope Drop Cable User Manual

Page 39

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Going Through an Exterior Wall

Survey the interior of the residence for the outlet location. Using a point of reference that is common to both the

inside and the outside (such as the lower corner of a window pane), measure the vertical and horizontal distances

to the center of the outlet location (example: 1.5 feet over and 1 foot down from the lower corner of the window).

Check again for obvious interference from electrical outlets, wall studs, plumbing,

etc. You may want to shut off any nearby electrical circuit, as acciden-

tal contact with live service may result in a fatal shock.

From the outside, measure from the reference point and drill a thin pilot hole

at a slight upward angle to prevent water from later seeping in through the

hole. If you are going through masonry, use a masonry bit and drill through the

mortar, not the brick. If the pilot hole checks out, enlarge the hole with a larger bit.

Insert a feed-thru bushing.

On the inside, cut the outlet opening in the drywall. Do not install

the bracket yet; the metal edges may damage the cable during

installation.

Set your A-frame or cable box at the ground block/NIU and pull

the cable with you to the entry point. Allow extra cable for running

through the wall as well as forming a 5 in (13 cm) drip loop. Use

cable clips to attach the cable to the foundation of the residence.

Pass the cable through the bushing and through the hole in the

drywall. Allow plenty of cable for termination. Form the drip loop

and place your last fastener. Seal the bushing with RTV silicone or

a similar weatherproof sealant.

tech tip:

use electrical

outlet boxes to

help find

wall studs;

they are

attached to

them

Residential Interior Cabling 9.4

Going Through an Exterior Wall