To answer your specific question about using the third wire as the
return for both the +24 and +48, yes, it will work. No different than
single-point grounding. It's really going to depend on the current
required for both systems if that single third wire will be able to
handle the 0V return current. But I would agree with everyone else, just
run 48/56 up and use DC-DC converters as needed.
On 11/16/2015 3:28 PM, Mathew Howard wrote:
Yeah, running 48v to the top and then dropping to 24v is what I was
planning on doing, but I just got to wondering if the other way would
work... the only real advantage being less electronics at the top.
On Mon, Nov 16, 2015 at 3:20 PM, Justin Wilson - MTIN <li...@mtin.net
<mailto:li...@mtin.net>> wrote:
+1 to this. It’s not the volts you have to worry about it’s the
amp drop. DC doesn’t lose much voltage over even a 1000 foot run
of 12 gauge. What happens is the wire is not heavy enough to
carry the needed amps. There are some calculators that say how
many amps a certain gauge of wire can carry at such and such
voltage on DC. Most folks we work with are running 10 gauge wire
up the tower in these cases.
Justin Wilson
j...@mtin.net <mailto:j...@mtin.net>
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On Nov 16, 2015, at 4:16 PM, Vince West <vi...@shelbybb.com
<mailto:vi...@shelbybb.com>> wrote:
I would recommend using 48v up and down converting to 24v.
Depending on how far you are running it, I would recommend doing
48v also to prevent voltage drop.
I am not sure you can even do waht you are asking if you are
using something like 16-3 service cord. That goes beyond my
knowledge. I would personally down convert to power two different
pieces of equipment.
Vince West
Tower Hand
Technical Support
Shelby Broadband
148 Citizens Blvd
Simpsonville, KY 40067
Phone: 1-888-364-4232 <tel:1-888-364-4232>
On Mon, Nov 16, 2015 at 4:07 PM, Mathew Howard
<mhoward...@gmail.com <mailto:mhoward...@gmail.com>> wrote:
If I have a three conductor cable running up a tower, would
it be a work, or be a bad idea, to run both 24v and 48v
through the same cable and use the third conductor for the
return on both?
