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Can I use an old chimney as a electrical chase

Home Improvement Asked on November 1, 2021

TLDR:

Are there any code/cost reasons we couldn’t run BX/romex to our attic through an old disconnected chimney?
The chimney in question

Long Question:

I will be closing on a house shortly and there is a hole in the attic floor where the house’s original chimney used to run (the chimney has been removed down to the attic floor). The attic is finished but run-down and we plan to eventually renovate it; but there is limited electrical. Before we move all of our furniture in we were going to have a contractor refinish the floors and replace any soft spots or holes, but this seems like a perfect chase for electrical and I was considering bringing in an electrician to run an extra circuit to the attic before we cover it up. Would there be a code problem running through an old chimney like this? Or alternatively would there be another reason this would be worse than trying to fish a cable up past two stories of nice old lath and plaster walls?

One Answer

It isn't a chimney if it is disconnected. Yes.

As for what you need to support the cables. This is really on the whim of a local inspector. As mentioned in comments I have never had an issue dropping NM straight down plumbing walls in the interior of a house. I made right before the drop and right after the drop very secure.

Answered by DMoore on November 1, 2021

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