No current = no voltage drop. Ohms Law.
On Thu, Oct 18, 2012 at 3:38 PM, Jeromie Reeves <[email protected]> wrote: > The resistance of the length of wire. > > On Thu, Oct 18, 2012 at 11:03 AM, Greg Ihnen <[email protected]> wrote: >> A voltage difference with no load? What's causing the drop? >> >> >> On Thu, Oct 18, 2012 at 10:06 AM, Justin Wilson <[email protected]> wrote: >>> >>> We see 27.3 volts at the battery. And 27.1 volts at the top with >>> no load. >>> Obviously load will have an impact on this. >>> >>> Justin >>> >>> -----Original Message----- >>> From: Jeromie Reeves <[email protected]> >>> Reply-To: WISPA General List <[email protected]> >>> Date: Thursday, October 18, 2012 9:15 AM >>> To: WISPA General List <[email protected]> >>> Subject: Re: [WISPA] Another Ubiquity question >>> >>> >That depends on wire size. That distance is not going to be ethernet >>> >so I will assume #12 AWG, 400ft, copper wire, etc. You should be >>> >seeing a 5.6% drop under a 1amp load or about 25v under load. >>> > >>> > >>> >On Thu, Oct 18, 2012 at 6:02 AM, Justin Wilson <[email protected]> wrote: >>> >> 27 volts at the base. DC has very little loss over 400-500 >>> >> foot >>> >> distances. We are seeing about .1 volt loss on a 400 foot run. >>> >> >>> >> -----Original Message----- >>> >> From: Scott Lambert <[email protected]> >>> >> Reply-To: WISPA General List <[email protected]> >>> >> Date: Thursday, October 18, 2012 12:16 AM >>> >> To: <[email protected]> >>> >> Subject: Re: [WISPA] Another Ubiquity question >>> >> >>> >>>On Wed, Oct 17, 2012 at 10:14:03PM -0400, Justin Wilson wrote: >>> >>>> Many UBNT deployments running at 27volts of clean DC power. Not >>> >>>> saying it's ideal but it works. >>> >>> >>> >>>27v at the ethernet port or 27v at the base of the tower? >>> >>> >>> >>>-- >>> >>>Scott Lambert KC5MLE Unix >>> >>>SysAdmin >>> >>>[email protected] >>> >>>_______________________________________________ >>> >>>Wireless mailing list >>> >>>[email protected] >>> >>>http://lists.wispa.org/mailman/listinfo/wireless >>> >>> >>> >> >>> >> >>> >> _______________________________________________ >>> >> Wireless mailing list >>> >> [email protected] >>> >> http://lists.wispa.org/mailman/listinfo/wireless >>> >_______________________________________________ >>> >Wireless mailing list >>> >[email protected] >>> >http://lists.wispa.org/mailman/listinfo/wireless >>> > >>> >>> >>> _______________________________________________ >>> Wireless mailing list >>> [email protected] >>> http://lists.wispa.org/mailman/listinfo/wireless >> >> >> >> _______________________________________________ >> Wireless mailing list >> [email protected] >> http://lists.wispa.org/mailman/listinfo/wireless >> > _______________________________________________ > Wireless mailing list > [email protected] > http://lists.wispa.org/mailman/listinfo/wireless _______________________________________________ Wireless mailing list [email protected] http://lists.wispa.org/mailman/listinfo/wireless
