Check for studs at the location where you want the wire to exit.
Fishing wire from attic to basement.
Then panning light gauge metal.
Secure the wires tight using wire staples at both the bottom and top of the run to make sure that the wire doesn t bow in the middle and get close to the flue.
If there s enough clearence on the sides of the chimney you might be able to fish a cable up that way.
The presumption is that the cable run will be looped from one box location down or up into a basement crawlspace or an attic then across floor joists before entering the stud cavity where the next box is located.
Do you have a chimney that runs from the basement to the attic.
Ideally use a stud finder that can tell the difference between studs pipes and other obstacles.
Confirm the space is free.
It should be a straight shot to the basement.
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Confirm there are no crossbeams or ductwork along the path the wire will take typically straight up to the attic or straight down to the basement.
From the attic lower the fish tape all the way to the basement connect your wire and then pull it back through.