Re: Audio Video and power over cat 5

["Jackcsg" <nospam@xxxxxxxxxx>]

Even with calculators as aids, wire (NEC) size also eludes most.
I agree, residentially, most installs are short runs, and occupy very little
power for consumption, coupled with a small amount of power available to
begin with.
The problem comes when those same principles are applied commercially.
I just visited a Car Dealership in which these residential applications were
applied to a 25 acre lot. Everything, even the cameras, is powered with wall
warts, which under their current load, brown discoloration, and melted
plastic case, is more of a fire hazard, than a functional system. The system
is 4 years old, and completely dead. I can't imagine why InterStar, the
company that installed it, went bankrupt. Go figure....

"Robert L Bass" <sales@xxxxxxxxxxxxxxxxxxxxx> wrote in message
news:1di2j1lpb0rbub943otvu2d7kgb49d3h4g@xxxxxxxxxx
> > I see that. I was more in tune to stating the misconceptions
> > of PoE.  Most people in the alarm industry aren't very good
> > at calculating line load/loss.
>
> Agreed.  There are several online resources with voltage drop
> tables, etc., which can help but most alarm techs don't even use
> them.  Residential alarms rarely require any calculations since
> most systems are small and wiring runs are short.
>
> A wise man has often said, "This stuff isn't rocket science."
> :^)
>
> --
>
> Regards,
> Robert L Bass
>
> Bass Burglar Alarms
> The Online DIY Store
> http://www.BassBurglarAlarms.com