I think that it's more about the fact that the installer might have to
be drilling holes in various places than the fact that they're running a
cable that would never see more than 5 volts.
It's possible that doing POE, using a high current power supply, could
cause a fire if there were a short in the cable and there were no
Thanks for mentioning the CSLB license category. Most us laymen know that
they should hire a licensed electrician for higher voltage work because it
has been pounded into our heads. But I hadn't heard of a need for a licensed
phone/data/tv cable installer. I didn't know that they had to be licensed.
I've never seen a building permit posted for this type of work. This is
probably why the neighbors on the blog couldn't find a licensed electrician
with the background to do the job.
If I wanted to install Cat 5/6 in my house, I'd probably do the job myself.
Since I personally completely re-wired my house (with permits) when we
bought it, I know where all the wires and pipes are. But even if I didn't, I
could buy and use both a magnetic stud detector and a signal generating
probe to check before I drilled.
Data technology advances so quickly, I always wonder if it is worth
investing more than the absolute minimum installing something like this. I
know that when we bought our house, I had planned on installing Ethernet at
one point. But the press of other work made me delay it. And we didn't
really need it for a long time. By the time we needed to operate multiple
computers on line at home, wifi had advanced enough to take care of our