How can I safely surface run two electrical Romex electrical cable from the attached garage panel through the second floor bedroom closet to the attic, while complying with North Carolina electrical codes and codes for passing wires through a firewall? The bedroom is located directly above the garage, which means there is likely a firewall between the two areas. I'd like to avoid passing new wires through the wall because the wall is spray foamed and is located above the electrical panel. I believe there are many existing wires in the wall that run to the HVAC attic air handler.
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Surface running the wires means installing conduit and not using NM cable. You might want to install the conduit up the exterior wall from the garage to the attic. This is done frequently when replacing knob & tube wiring on different levels of a house. This avoids the firewall issue.
If you choose to do it your way, you'll need to get with your local building authority for acceptable fireproofing.
JACK
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