Will mains electric cable affect hdmi cables?

[Craterloads]

We are trying to run some Ethernet and hdmi cables under floorboards along a channel already there for mains electric cables like a bunch of 6 thick mains cable.

Tested hdmi cables outside and were working fine. Ran underneath along with mains cables and no longer working.

15m fibre hdmi cables so would have thought it should be free from interference.

The Ethernet cables seems to be working fine.

 

[Craterloads]

Are there any tight bends in the cable where it's installed?

Not really tried to avoid, kind of a 15m U shape.

I’ve ordered a 15m standard copper hdmi cable so will see how I get on with that. It is shielded too.

But I assumed fibre is much better for longer runs.

 

[Craterloads]

The only issue you might have is interference, but I'd be rather surprised if you do. Can you not test it for a bit before putting the floorboards down?

We put one in, didn’t work. Tested the other outside, removed non working one and put replacement in. And it reversed, the non working one started working outside, and the working one stopped working inside!

 

[Craterloads]

What ethernet cables have you run? You want 6a or above as they'll be shielded then too

Cat6 flat cable, they seem to be working fine but are a shorter run

 

[Craterloads]

Having slept on it, realised I’ve been a bit of a donut.

The cables are directional!

So we’ve been testing them outside and working, and from wherever we’ve tested have started feeding the cable through to the other side ending up on opposite direction!

To be fair to me I’ve never used a directional hdmi cable, it’s just these fibre hdmi cables that are.

 

[Craterloads]

Makes sense. Are the cables capable of running 4k60? Interested as I've not seen any long active HDMI cables that aren't super expensive!

Yep these ones

https://www.amazon.co.uk/gp/aw/d/B09L15QRG2?psc=1&ref=ppx_pop_mob_b_asin_title