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Snaking romex in exterior wall?

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Snaking romex in exterior wall? trader4 12-09-2006
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Posted by on December 9, 2006, 5:40 pm


I'm doing some electrical work and need to snake a new romex from the
basement up to an existing wall switch box. It's an exterior wall
with fiberglass insulation. From the bottom plate in the basement, I
can see where the existing cables go up to that switch. I can drill a
new hole or maybe use the existing hole. Question is, are they any
tricks or suggestions on how to do the snaking? I've done it from the
attic down before, but never had to deal with an exterior wall with
insulation.


Radiant Heat 468x60
Posted by RBM on December 9, 2006, 6:12 pm


Drill an extra hole or two in the plate, lined up as close as possible with
the box, then drop a steel snake from the box down until it taps the plate.
Keep tapping it on the plate while spinning it in small amounts, until it
pops through one of the holes... if your lucky



> I'm doing some electrical work and need to snake a new romex from the
> basement up to an existing wall switch box. It's an exterior wall
> with fiberglass insulation. From the bottom plate in the basement, I
> can see where the existing cables go up to that switch. I can drill a
> new hole or maybe use the existing hole. Question is, are they any
> tricks or suggestions on how to do the snaking? I've done it from the
> attic down before, but never had to deal with an exterior wall with
> insulation.
>



Posted by bill allemann on December 9, 2006, 6:16 pm


Most people are hesitant to cut into a wall, but if you have paint to match
a repair, it isn't a big deal to
make a hole near the switch box, and then patch it back after the electric
work. The work of the patch
is usually worth it in order to do the electrical work correctly.


> I'm doing some electrical work and need to snake a new romex from the
> basement up to an existing wall switch box. It's an exterior wall
> with fiberglass insulation. From the bottom plate in the basement, I
> can see where the existing cables go up to that switch. I can drill a
> new hole or maybe use the existing hole. Question is, are they any
> tricks or suggestions on how to do the snaking? I've done it from the
> attic down before, but never had to deal with an exterior wall with
> insulation.
>



Posted by Pat on December 9, 2006, 9:39 pm


The only luck I have ever had was to get a very stiff, very thin shaft
that's a couple of feet longer than you have to go. Drill you hole
from the bottom and get the shaft between the wall and the insulation.
Snake it up to the hole for the switch. After you get the shaft
through the top hole, tape a string to the bottom. Pull up the shaft
until you get to the string. Then tie the wire to the string and pull
that through.


Posted by Jesse on December 9, 2006, 10:13 pm


wrote:

>The only luck I have ever had was to get a very stiff, very thin shaft
>that's a couple of feet longer than you have to go. Drill you hole
>from the bottom and get the shaft between the wall and the insulation.
>Snake it up to the hole for the switch. After you get the shaft
>through the top hole, tape a string to the bottom. Pull up the shaft
>until you get to the string. Then tie the wire to the string and pull
>that through.
For remodelling old houses electrical, especially on the old war time
1 1/2 story sloped ceilings I have a roll of 100 ft. fine chain that I
drop down from the outlet. The chain behaves like sand and will
eventually find the hole that was drilled in the plate. jesse

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