I had some 260 volt circuits in the phone company that remotely powered equipment. You would feel it, not pleasant.
From: Bill Prince Sent: Tuesday, November 15, 2016 8:14 AM To: [email protected] Subject: Re: [AFMUG] Packetflux & 450M Timing Way beyond what I would be comfortable with. bp <part15sbs{at}gmail{dot}com> On 11/15/2016 7:10 AM, Chuck McCown wrote: 300V nominally but you can get 600V cable. And since those insulation ratings are derated, pretty sure you can double them before sparks start flying. From: Bill Prince Sent: Tuesday, November 15, 2016 7:56 AM To: [email protected] Subject: Re: [AFMUG] Packetflux & 450M Timing What's the breakdown voltage on the insulation for a 22 AWG wire? bp <part15sbs{at}gmail{dot}com> On 11/15/2016 6:54 AM, Chuck McCown wrote: Perhaps jack it up to 1000 volts, 12 amps... Run your whole house off of a cat 5. Now that would be an interesting youtube video. From: Bill Prince Sent: Tuesday, November 15, 2016 7:51 AM To: [email protected] Subject: Re: [AFMUG] Packetflux & 450M Timing Using that kind of power scheme, and 48 volts, you're talking about over 500 watts? No way! bp <part15sbs{at}gmail{dot}com> On 11/15/2016 6:26 AM, Chuck McCown wrote: Tower ground earth ground etc, like Trango does. Yes, I do, the manufacturer of the jacks I use rates them at 1.5 amps. But you better not plug them in under load... From: Bill Prince Sent: Tuesday, November 15, 2016 7:22 AM To: [email protected] Subject: Re: [AFMUG] Packetflux & 450M Timing All one polarity? Where's the drain? You really think you can get 1-1/2 amps through each of those teeny little RJ45 connections? bp <part15sbs{at}gmail{dot}com> On 11/15/2016 6:14 AM, Chuck McCown wrote: I am talking about all wires being one polarity. I think I can get 12 amps without melting anything. From: Bill Prince Sent: Monday, November 14, 2016 5:41 PM To: [email protected] Subject: Re: [AFMUG] Packetflux & 450M Timing Let me be more clear. The circuit that is pins 4,5 (+), and pins 7,8 (-) is one circuit. Total of .75 amps. The circuit that is pins 1,2 (-), and pins 3,6 (+) is one circuit. Total of .75 amps. That puts 375 milliamps on each pin and each wire. That's because the power/current that is going in on pins 7 & 8, has to return on pins 4 & 5. You can't double that. Possibly more than I would be comfortable with anyway. bp <part15sbs{at}gmail{dot}com> On 11/14/2016 12:18 PM, Chuck McCown wrote: Half an amp per wire on one chart, 3.5 amps on another chart. Heating and insulation temperature rating are going to be the limiting factors there. Jacks I use have a 1.5 amp rating per pin. So, I think you can get 12 amps total if the cable is short enough. From: Bill Prince Sent: Monday, November 14, 2016 1:11 PM To: [email protected] Subject: Re: [AFMUG] Packetflux & 450M Timing Each pair is one half of a power circuit. So there are 4 halves. There are two issues; how much current can each wire carry, and how much current can each connector pin can carry. bp <part15sbs{at}gmail{dot}com> On 11/14/2016 11:59 AM, Josh Luthman wrote: There are four pairs. AF5x and the H in 24vh or 48vh POE ports of Netonix do power over all four pairs. Speaking with Ubnt support last week, AF5x should ideally do four pairs when possible. 48v (0.75*4a) = 144 watts Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Mon, Nov 14, 2016 at 2:44 PM, Bill Prince <[email protected]> wrote: At 48 volts, and .75 amps per pair of power wires, that would be 36 watts + 36 watts, or 72 watts total? Just noodling here. bp <part15sbs{at}gmail{dot}com> On 11/14/2016 11:38 AM, George Skorup wrote: For the record, http://store.packetflux.com/powerinjector-plus-sync-gigabit-version/ says: 1A per port maximum power. (48 watts at 48 Volts) So.. is the electronic over-current protection the 1A limit? Or is this just outdated info? Pretty sure it's >1A because I've "tested" it (cable leaking water into the GigE-APC, the port didn't trip, and the card was hot as hell). I was also unaware that Cambium won't be supporting sync-over-power on the 450m. I imagine the ringing/bounce issue killed that idea due to the high power consumption. On 11/14/2016 1:00 PM, Forrest Christian (List Account) wrote: The current products should power the 450M just fine. The rating is 1A per pair per port, so at the 48V you're good up to 96W. On Nov 14, 2016 7:50 PM, "George Skorup" <[email protected]> wrote: The 450m pulls 70 watts. The current SyncInjector/PowerInjector+Sync is around 1A max per port. What you could do for now is a GigE-POE-APC and the new aux port version SyncBox Junior. On 11/14/2016 12:34 PM, Matt wrote: Shouldn't the sync over power for the 450M be the same as PMP450i? How is the 1u sync injector coming? On Mon, Nov 14, 2016 at 12:30 PM, Forrest Christian (List Account) <[email protected]> wrote: All of the currently shipping syncbox product line are compatible. For sync over power, I have the specs, but the design isn't done yet. On Nov 14, 2016 5:40 PM, "Sam Lambie" <[email protected]> wrote: A question for Forrest mostly. Have you come up with a timing product for the 450m AP yet? If not, have you got a timeline for release? Sam -- -- Sam Lambie Taosnet Wireless Tech. 575-758-7598 Office www.Taosnet.com
