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How should I install electrical wiring inside the walls of my home? Installing Electrical Wiring around Obstacles inside the walls and ceilings.

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Electrical Project: How should I install electrical wiring inside the walls of my home?


This electrical project came from: Greg, a Homeowner from McKinney, Texas.

Additional Comments: Great website.

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

Install Electrical Wiring Inside Walls and Ceilings

plan-electrical wiring project

Installing Electrical Wiring around Obstacles and HVAC Ducting

  1. As mentioned in this question, the new electrical wiring cannot penetrate the HVAC duct.
  2. It is best to plan the path that will be used for installing the electrical wiring to avoid potential obstacles and prevent running out of wire.
  3. Electrical wiring can be installed around the duct as long as the cable wiring does not interfere with the flex duct where it may squeeze the duct size smaller.
  4. It is best if the electrical cable is installed where it does not come into contact with the duct.

The NEC addresses Un-Supported Cables inside Existing Walls

nec electrical code
RE: NEC 334.30 subsection (B)

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