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LG's W7 wallpaper OLED TV has a cable that's not up to code

If you're gonna buy LG's revolutionary $8000 wallpaper TV, use a professional for in-wall cable installations.

David Katzmaier Editorial Director -- Personal Tech
David reviews TVs and leads the Personal Tech team at CNET, covering mobile, software, computing, streaming and home entertainment. We provide helpful, expert reviews, advice and videos on what gadget or service to buy and how to get the most out of it.
Expertise A 20-year CNET veteran, David has been reviewing TVs since the days of CRT, rear-projection and plasma. Prior to CNET he worked at Sound & Vision magazine and eTown.com. He is known to two people on Twitter as the Cormac McCarthy of consumer electronics. Credentials
  • Although still awaiting his Oscar for Best Picture Reviewer, David does hold certifications from the Imaging Science Foundation and the National Institutes of Standards and Technology on display calibration and evaluation.
David Katzmaier
2 min read
Josh Miller

LG's "wallpaper" W7 was the coolest TV that debuted at CES 2017 in my book. Its millimeter-thick screen hugs your wall like another coat of paint and should deliver image quality as good as any of the company's other world-beating OLED TVs.

Unfortunately if you want it to look as seamless as wallpaper, you'll need a professional to install it. That's because one crucial component, its proprietary ribbon cable, isn't up to code.

To achieve its insane thinness the W7 has a two-piece design: the super-thin screen and a separate sound bar that houses all the connections, power supply and other innards that make a TV go.

Watch this: Incredible LG OLED TV hangs totally flush against the wall

Connecting the two is a proprietary ribbon cable. It carries not just video information from the TV's HDMI and other connections, but power too. Since the cable carries power, in-wall installation needs to be up to NFPA (National Fire Prevention Association) electrical code.

Unfortunately it's not, as CE Pro reported last week. To achieve that sleek "wallpaper" look, where the ribbon cable hides inside the wall and the display stands alone like a picture, you'll need to enlist the help of a professional installer who can ensure it meets your local code.

"Proper installation in the wall would be to run it inside a conduit or smurf tube terminated at both ends in a flush-mount box of the correct rating," said Kevin Holm of Holm Electric, an installer consulted by CE Pro. "It cannot be a low-voltage ring." He added that it should be UL listed.

lg-signature-oled-tv-w-1074-012.jpg

See that white cable? Not up to code.

Josh Miller/CNET

I contacted LG for more information. Tim Alessi, the director of new product development, confirmed that the cable is UL listed and that only professionals should complete in-wall installations of the cable. "Since the electrical codes vary from state to state, someone familiar with the local regulations should be consulted," he added.

I asked Alessi why LG used a cable that wasn't up to code. "Since not every installation will be done with the cable inside the wall, it was important to ensure the cable was as thin as possible to maintain a low profile on top of the wall or wherever it is visible," he replied. "Since NFPA rating would require the cable to be thicker, it was decided to forego this as other solutions to use the cable in-wall are available."

Long story short: If you want to install W7 in the sleekest, most seamless way -- with its cable hidden in the wall -- call a pro. Hey, it's an $8000 TV, you can afford it. If you go DIY, run the cable outside the wall.