Maybe as long as the power consumption is below 100 watts or so. Once you get into higher power requirements; maybe around 200 watts, I would always start with a 48 volt system.

bp
<part15sbs{at}gmail{dot}com>

On 4/3/2018 7:35 PM, Mathew Howard wrote:
Yeah, but if the entire thing is contained inside a 2' square box, the difference in wiring between 48v and 24v isn't really anything to be concerned about. I don't think there's much of a difference in efficiency between upconverting and downconverting, and I can't see what else is going to matter.

On Tue, Apr 3, 2018, 8:09 PM Bill Prince <[email protected] <mailto:[email protected]>> wrote:

    It's always easier to down-convert from 48V to 24V, mainly because
    of the current considerations. 48 watts at 48 volts is one amp,
    but when pulled from a 24V system, you end up with 2 amps. At 24
    volts, the current demands can mean you have to use bigger wire to
    support everything. At small wattages, not a big deal, but you
    need to keep an eye on it.


    bp
    <part15sbs{at}gmail{dot}com>

    On 4/3/2018 1:49 PM, Darin Steffl wrote:
    Hey guys,

    We're looking at fine tuning our DC power solution for sites
    using more than 75w of power.

    We're setting in with using the Traco BCMU-360 with a Meanwell
    SDR-240-24 or 48 volts power supply.

    If we're using the Traco UPS unit, is there any advantage to
    using 24v vs 48v power supply? It will only be powering a Netonix
    DC switch and the BCMU only needs a 12v battery.

    Also, we're looking at SiteMonitor to monitor the battery voltage
    and grid power as well. Do you recommend this or the Tycon
    webmonitor (TPDIN)?

    Thanks

-- Darin Steffl
    Minnesota WiFi
    www.mnwifi.com <http://www.mnwifi.com/>
    507-634-WiFi
    <http://www.facebook.com/minnesotawifi> Like us on Facebook
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