Okay, let's break down the Facebook post and address the code-compliant (and safer) options for adding a light fixture without attic access.

The Problem

Someone wants to add a light fixture to a ceiling. There's no attic access to easily run wires. They want to avoid cutting into drywall.

The Original Idea (and Why It's Problematic)



"Stealing power from the switch": This implies tapping into the existing switch wiring in the wall. While seemingly easy, it's often not code-compliant and potentially unsafe, especially if the existing circuit is already heavily loaded. "Running NM cable outside the walls/ceiling but covering it in wire molding": This can be potentially code compliant in certain situations, but it's important to understand how to do it safely.

Analysis of the Original Idea

Here's why running NM cable outside the wall and covering it with wire molding

can be done, but with strict limitations:1. NM Cable Suitability: NM cable (Romex) is not rated for exposed outdoor use. Direct sunlight, moisture, and temperature extremes will degrade the cable's insulation, leading to shorts, fires, and shocks.2. Protection: NM cable is easily damaged. While wire molding provides some protection, it's generally for indoor, dry locations. Think about a picture falling off the wall and puncturing the cable.3. Code Compliance: The NEC (National Electrical Code) dictates how wiring must be installed. Exposing NM cable outside the building's walls/ceiling is a violation of the NEC.

The Better (Code-Compliant) Alternatives

Here are much safer and more code-compliant ways to accomplish this task:1. Surface-Mounted Wiring (with appropriate materials)



Use Metal Conduit or Surface-Mounted Raceway

Instead of NM cable, use individual conductors (THHN/THWN) inside a metal conduit (EMT, Rigid) or approved surface-mounted raceway system.

Surface-Mounted Boxes

Use metal or plastic surface-mounted electrical boxes for the fixture and any connection points.

Running the Raceway

Plan the route of the raceway carefully, ensuring it's securely fastened to the wall and ceiling using appropriate hardware.2.

Wireless Lighting Solutions



Smart Bulbs/Fixtures: Consider smart bulbs that connect to existing light fixtures and can be controlled wirelessly. Battery-Powered Lights: There are many stylish and functional battery-powered LED lights available now.3. Qualified Electrician When in doubt, consulting with and hiring a licensed and qualified electrician is always the best practice.

Wire Molding (Raceway) Rules (General Guidelines)



Listing and Approval: The wire molding must be listed for electrical use. Look for a UL or ETL listing. Fill Capacity: Don't overfill the wire molding. The manufacturer's specifications will dictate the maximum number and size of conductors allowed. Overfilling can cause overheating. Conductor Types: Usually, you'll use THHN or THWN individual conductors inside the wire molding (not NM cable). Check the molding's listing for acceptable wire types. Support: Secure the wire molding to the wall or ceiling with appropriate fasteners at intervals specified by the manufacturer and the NEC. Connections: Use approved boxes and connectors for all splices and connections. Splices must be accessible and made in an approved box. Grounding: If the wire molding is metal, it must be properly grounded. This is critical for safety. Location: Use the wire molding in dry, indoor locations unless it's specifically listed for wet or damp locations. NEC Compliance: The entire installation must comply with the National Electrical Code (NEC) and any local amendments.

Important Considerations for the Facebook User



Local Codes

Electrical codes vary by location. What might be acceptable in one area could be a violation in another.

Homeowner vs. Licensed Electrician

In many jurisdictions, homeowners are allowed to do some electrical work on their own homes, but they are still responsible for complying with all codes.

Safety First: Electrical work can be dangerous if done improperly. If the Facebook poster (or anyone else) is not comfortable or knowledgeable about electrical work, they should hire a licensed electrician.

In summary:

Running NM cable exposed and covering it with wire molding for outdoor applications is almost certainly not a safe or code-compliant solution. It's essential to choose a method that complies with local codes, protects the wiring, and ensures safety. Flag for review