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Fiber with integrated DC...

Posted: Sun Mar 01, 2015 7:15 pm
by billbuchan
I have a rather unusual site in that I want to stick a second mast up - around 450 meters away. So too far for standard ethernet and too far for running AC reliably.. I was rather interested in the fibre+DC cable bundle you were suggesting - presumably with the DC version of the new switch..

What kind of distance are we talking? I'm guessing probably not 450 meters, but I can live in hope.

---* Bill

Re: Fiber with integrated DC...

Posted: Sun Mar 01, 2015 7:39 pm
by sirhc
I think you are referring to the TOWER Switch?

With the TOWER Switch you are limited only by the voltage/current drop which the unit adjusts/trims voltage to compensate but 450 meters should be OK depending on power needs at the far side. At that distance you may not have as much current available to fully load the switch down.

Re: Fiber with integrated DC...

Posted: Tue Mar 03, 2015 11:18 am
by rebelwireless
what gauge is the copper proposed for the fiber+power integrated line? This is well understood, we can calculate the drops and maximums. my gut says that at that kind of distance you would want a large gauge power wire pair anyway.

Re: Fiber with integrated DC...

Posted: Tue Mar 03, 2015 11:50 am
by sirhc
rebelwireless wrote:what gauge is the copper proposed for the fiber+power integrated line? This is well understood, we can calculate the drops and maximums. my gut says that at that kind of distance you would want a large gauge power wire pair anyway.


Actually you do better with multiple smaller gauge wires than 1 large copper gauge. We are "looking" at using (6) 12 AWG stranded for DC power and then another wire(s) for earth ground.

Re: Fiber with integrated DC...

Posted: Sun Mar 08, 2015 10:50 am
by amishgenius
12 g sounds good. I currently run 14 gauge 2 pair for 600 ft tower. A little more wouldn't hurt