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I am working on a 1920s era home with an exposed brick chimney inside. The chimney is not connected to a fireplace but is used to vent the water heater and furnace in the basement. I am currently moving a light switch on the main floor and the best place for it to be would be the outside wall of the chimney. I am wondering if it is a violation to mount a run of EMT from the attic along the chimney and mount the switch to the side in a box.

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Your fine as long as you can properly mount it. Rock is not normally a smooth surface and a little hard to anchor to in a neat workmanlike manner.

  • I was thinking of using tapcons and EMT brackets. But am totally open to other suggestions. – Murenrb Jul 26 '17 at 17:54
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    Tapcons and single hole straps work well for EMT. You will need to use raintigh couplings and box ends or threaded adapters if u use a conduit body like a LR or RR to go through the wall and have a clean install. I usually use LB's and anchor to the wall but have used the brick in the past. – Ed Beal Jul 27 '17 at 2:46
  • Do I need to use raintight couplings if it is all indoors? It's a strange exposed chimney running through the center of the house. – Murenrb Jul 31 '17 at 15:31

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