Carefully push the top low voltage box into the wall cavity just enough that you can easily access the tube from the bottom hole. Fish tape is a springy steel tape that electricians use to pull wire through walls.
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How to fish tv cables through wall. Pull the cable through with a fish tape. Dont go wire fishing without a fish tape. Some fish tapes have hooked ends to grab a second fish tape. Stretch out the cable and untwist any kinks in it. For more in depth informatino about running fish wire and cable through walls please. Run electrical cable through walls and across ceilings without tearing them apart.
Then wrap the remaining ground wire through the rods eyelet and wrap it back around the wires sheathing several times. Finally wrap the whole area with electrical tape. Push the fish stick up through the tube and out of the top low voltage box. When you hook cable to the eyelet of a glow rod strip the plastic sheathing back about 6 in then cut off the hot and neutral wires. Tape the end of the fish tape tightly onto the cable with electrical tape. Carefully extend the fish tape from one opening to the other.
Learn how with this video. Attach the fish tape to the cable after the blade of the fish tape has been retrieved through the box opening in the wall uncoil enough nm cable to complete the cable run you are planning. Then retract the fish tape to pull the cable through. Extend the fish stick so that it protrudes out of both the top and bottom holes and you can tape it to the wall temporarily. If you need to fish a larger cable or bundle or if your buddy is going to feed the cable to you from above or below thread a pull cord through the bull nose. Make sure the tape is smooth so the cable can slide through the opening.
If youre fishing a small cable like a security cable you can attach the cable to the end of the rod by threading one of the wires in the cable through the hole in the bull nose. Make sure to allow about 2 feet of excess cable at each end. Fish tapes are the best tool you can find for pushing through holes in a wall.