The reason high voltage and low voltage aren’t permitted to share a
conduit is safety. Chafing/rub outs that would energize low voltage
cable and devices with high voltage aren’t protected against in the same
way that a high voltage to high voltage short would be. It’s a low
likelihood/high consequence fault that every modern jurisdictions code
memorializes.
------ Original Message ------
From "Saku Ytti" <s...@ytti.fi>
To "Mark Tinka" <mark@tinka.africa>
Cc nanog@nanog.org
Date 12/6/2024 3:31:41 AM
Subject Re: New home builders without wires
On Fri, 6 Dec 2024 at 05:30, Mark Tinka <mark@tinka.africa> wrote:
I ran Ethernet to every room, some of it using STP through conduits crossing
the roof to get across one end of the house to the other. It helped me avoid
wireless extenders and meshing technologies.
In the EU at least you cannot do that, you can't use the same conduits
for data and power. But it's been in the code for a long time now to
have ethernet upon delivery, both CAT6a (rooms) and fiber (just a
single place is enough, I think).
Personally I think the code is wrong, because the ethernet ports are
next to power sockets at floor level, or at TV level in bedrooms in
some countries. I think it's a niche use-case that people actually use
wired ethernet to connect devices, and we shouldn't codify for
minorities. I think code should include radio design, and put ports
near lamps where radio design says AP should be, I think this would
cater to the majority need. Minority can figure out their custom
design.
The ethernet ports are used so rarely, at least in my market it is
normal to get termination delivered so wrong, you can only get 100M
out of CAT6A (all 8 wires connected). And no one in the market appears
to understand that just testing for conductivity isn't good enough or
even understand the problem when described. So consumers are happily
buying that >100M Internet, but will never get more than 100M, because
they have poor termination.
--
++ytti
