Installing Electrical Wiring in the Home

I am installing some new recessed lights in an existing circuit in my kitchen in our home built in 2003.

• The location of the new lights will require me to run the 14/2 NM wiring through ceiling joists perpendicular to where there is a HVAC duct (likely flexible foil duct if consistent with the rest of the house).
• I don’t have access to this section of the ceiling where the duct runs without tearing out additional drywall, which is really undesired.
• There is approx. 14 inches from the ceiling drywall to the second floor above, so there should be ample room around the duct for the wiring.
• I plan on drilling holes through the joists on either side of the duct to run the wire.
• As long as I don’t run the wiring through the duct, are there any other restrictions/special requirements that must be followed to be safe and meet code?
• Can the wire touch/rest on the duct?
• Should the holes be sealed around the wires?

Thanks!

This electrical question came from: Greg, a Homeowner from McKinney, Texas.
See more about Home Wiring for Texas

Additional Comments: Great website.

Dave’s Reply:
Thanks for your electrical question Greg.

How to Add Electrical Wiring in the Home

• Greg, as you have mentioned, the new electrical wiring cannot penetrate the HVAC duct,
• however it can be installed around it as long as the cable wiring does not interfere with the flex duct where it may squeeze the duct size smaller.
• It is best if the electrical cable is installed where it does not come into contact with the duct.

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