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Want to use powerline adapter for broadband

Apache1 — Thu, 09 Apr 2026 18:23:17 GMT

Hello,

I have BT full fibre broadband and have a white modem box on the wall, and have a Ethernet cable that is connected from the white modem box and the other end is plugged into the WAN red socket on the back of the router, I would like to move the BT smart hub router to the hallway, can I use a Powerline adapter, one that is connected to the white modem box and the other powerline connected to BT smart hub router.

If this can be done can you send me instructions on how to set this up.

Can you tell me which BT powerline adapter I need to purchase.

Thanks

Re: Want to use powerline adapter for broadband

licquorice — Thu, 09 Apr 2026 18:38:54 GMT

Yes, you can do that. I recommend you use the fastest TP Link device available.

Any if these will suffice, they are virtually plug and play.

https://www.tp-link.com/uk/home-networking/powerline/tl-pa717-kit/

https://www.tp-link.com/uk/home-networking/powerline/tl-pa9020p-kit/

https://www.tp-link.com/uk/home-networking/powerline/tl-pa8010p-kit/

Re: Want to use powerline adapter for broadband

WSH — Thu, 09 Apr 2026 18:47:58 GMT

Just be aware that that particular connection is technically outside of your network. (The WAN connection is part of the outside world). You can use the powerline adapters for that but you cannot use them for internal network traffic, (LAN traffic), at the same time.

Re: Want to use powerline adapter for broadband

Apache1 — Sun, 19 Apr 2026 09:11:50 GMT

Thanks for the information

will I still get the internet to work in my home and will I get TNT sport from BT to work on my EE TV pro box ?

Thanks

Re: Want to use powerline adapter for broadband

licquorice — Sun, 19 Apr 2026 15:21:07 GMT

Yes, of course.

Re: Want to use powerline adapter for broadband

bobpullen — Fri, 24 Apr 2026 19:44:44 GMT

Whilst it will probably 'work', it's not something I'd personally recommend, especially if you're on a higher speed FTTP package.

In my experience Powerline can be intermittently flaky, and by inserting it between your hub and the ONT box, you're subjecting your entire network to any problems it may introduce.

Speeds across Powerline are also highly dependent on the quality of your electrical wiring e.g. let's say your wiring is only good enough for a ~250mbps Powerline link and you have a 500mbps fibre product. By putting the Powerline link on the WAN interface, no device in your home would be able to achieve more than 250mbps.

YMMV of course, just be mindful it might not be plain sailing.