If you use a pair of 24 ga. wires connected together, you have the equivalent of 21 ga. Depending on which table you refer to, that's good for up to 7 amps for 'chassis wiring' - certainly it's good for at least an amp in a Cat 5 cable. Two pairs for data, two pairs for power.
I've used Cat 5e for speaker wire. One cable, two speakers for stereo, about a 35' run. I calculated that at 8 ohms speaker impedance the loss in the cable was under half a dB - negligible. Unrelated, but I've lately used PoE 'splitters' to power Raspberry Pi projects. The splitter I'm using will deliver 5 volts at 2 amps, more than enough for the Pi and accessories. I found a bargain on an HP Procurve 2910 series gigabit switch. Interestingly, it outputs 55 volts for PoE or PoE+, well within the voltage spec. Higher voltage = less IR loss in the cable. On Sat, Sep 9, 2017 at 9:34 AM, Tilghman Lesher <tilgh...@meg.abyt.es> wrote: > The additional caveat is that Cat 5/Cat 6 (24/23 AWG) are not > designed to transmit power over about half an amp. So depending upon > what the power requirements are of the external equipment, this may or > may not work. > > If in doubt, you can always buy exterior-rated power cable, and run it > through the wall to a GFCI-protected outlet on the exterior. > > Or the better way to go might be to simply run Ethernet through the > wall at that point and put the router inside. > > On Fri, Sep 8, 2017 at 7:54 PM, Gibson Prichard <gib...@prichard.tv> > wrote: > > You are correct gigabit ethernet uses all four pairs but nothing in his > > post said anything about gigabit coming from his Internet service > provider. > > If you simply take one of the cat5 cables and use it to provide power to > a > > router mounted externally that will solve his problem. > > > > On Fri, Sep 8, 2017 at 11:24 Tilghman Lesher <tilgh...@meg.abyt.es> > wrote: > >> > >> Beg pardon, but I thought that the rule of Ethernet only using 2 pairs > >> (4 wires) was no longer true. Specifically, anything that does > >> Gigabit Ethernet uses all 4 pairs (8 wires), and PoE is still > >> compatible because the signal is transmitted via a differential (which > >> is also why it no longer matters if wire polarity is swapped). > >> > >> Is this incorrect? > >> > >> On Fri, Sep 8, 2017 at 6:34 AM, Gibson Prichard <gib...@prichard.tv> > >> wrote: > >> > Basically, if you have RJ45-terminated wires going inside the house, > >> > ethernet only uses 4 of the 8 wires in the cable. Use the other 4 to > >> > send > >> > power out from inside to a router or switch which happens to be on the > >> > outside of your house. > >> > If the outside box is too small to hold a router or switch, you may > need > >> > to > >> > replace it with a larger enclosure. Assuming you have the right to > place > >> > a > >> > new box outside where these lines terminate that would be large enough > >> > to > >> > hold a switch or router, you could do that. Amazon (and others) have > >> > lots of > >> > weatherproof enclosures from which to choose. You could use one of the > >> > ethernet lines to provide power, either as a traditional barrel-plug > or > >> > as a > >> > POE connection. A simple barrel-plug-to RJ45 adapter, like this > >> > > >> > https://www.amazon.com/BeElion-Passive-Injector- > Splitter-Connector/dp/B01HMNJHII > >> > or > >> > > >> > https://www.amazon.com/Waterproof-Injector-Splitter- > 5-52-1mm-Ethernet/dp/B01MS9K6EX > >> > would provide you with the means to send power outside from an outlet > >> > over > >> > one of the ethernet cables (whether or not that particular wire was > >> > being > >> > used to carry data). > >> > > >> > Does this make sense? > >> > > >> > Gibson Prichard > >> > Nashville, TN > >> > gib...@prichard.tv > >> > > >> > On Thu, Sep 7, 2017 at 11:03 PM, Jack Coats <j...@coats.org> wrote: > >> >> > >> >> Looking for some input here... > >> >> > >> >> My house is pre-wired for ethernet. All the connections are > >> >> terminated in a box on the outside of my house. My ISP provides an > >> >> ethernet connection to that box, but there is little room and no > >> >> power. > >> >> What is a reasonable way to get my other ethernet connections 'lit' ? > >> >> There is no place where two of the ethernet connections terminate > near > >> >> each other inside the house (so I could put my router there). > >> >> > >> >> I am open to suggestions or 'best practices'. > >> >> > >> >> -- > >> >> ><> ... Jack > >> >> > >> >> -- > >> >> -- > >> >> You received this message because you are subscribed to the Google > >> >> Groups > >> >> "NLUG" group. > >> >> To post to this group, send email to nlug-talk@googlegroups.com > >> >> To unsubscribe from this group, send email to > >> >> nlug-talk+unsubscr...@googlegroups.com > >> >> For more options, visit this group at > >> >> http://groups.google.com/group/nlug-talk?hl=en > >> >> > >> >> --- > >> >> You received this message because you are subscribed to the Google > >> >> Groups > >> >> "NLUG" group. > >> >> To unsubscribe from this group and stop receiving emails from it, > send > >> >> an > >> >> email to nlug-talk+unsubscr...@googlegroups.com. > >> >> For more options, visit https://groups.google.com/d/optout. > >> > > >> > > >> > -- > >> > -- > >> > You received this message because you are subscribed to the Google > >> > Groups > >> > "NLUG" group. > >> > To post to this group, send email to nlug-talk@googlegroups.com > >> > To unsubscribe from this group, send email to > >> > nlug-talk+unsubscr...@googlegroups.com > >> > For more options, visit this group at > >> > http://groups.google.com/group/nlug-talk?hl=en > >> > > >> > --- > >> > You received this message because you are subscribed to the Google > >> > Groups > >> > "NLUG" group. > >> > To unsubscribe from this group and stop receiving emails from it, send > >> > an > >> > email to nlug-talk+unsubscr...@googlegroups.com. > >> > For more options, visit https://groups.google.com/d/optout. > >> > >> > >> > >> -- > >> Tilghman > >> > >> -- > >> -- > >> You received this message because you are subscribed to the Google > Groups > >> "NLUG" group. > >> To post to this group, send email to nlug-talk@googlegroups.com > >> To unsubscribe from this group, send email to > >> nlug-talk+unsubscr...@googlegroups.com > >> For more options, visit this group at > >> http://groups.google.com/group/nlug-talk?hl=en > >> > >> --- > >> You received this message because you are subscribed to the Google > Groups > >> "NLUG" group. > >> To unsubscribe from this group and stop receiving emails from it, send > an > >> email to nlug-talk+unsubscr...@googlegroups.com. > >> For more options, visit https://groups.google.com/d/optout. > > > > -- > > Gibson Prichard > > Nashville, TN > > gib...@prichard.tv > > > > -- > > -- > > You received this message because you are subscribed to the Google Groups > > "NLUG" group. > > To post to this group, send email to nlug-talk@googlegroups.com > > To unsubscribe from this group, send email to > > nlug-talk+unsubscr...@googlegroups.com > > For more options, visit this group at > > http://groups.google.com/group/nlug-talk?hl=en > > > > --- > > You received this message because you are subscribed to the Google Groups > > "NLUG" group. > > To unsubscribe from this group and stop receiving emails from it, send an > > email to nlug-talk+unsubscr...@googlegroups.com. > > For more options, visit https://groups.google.com/d/optout. > > > > -- > Tilghman > > -- > -- > You received this message because you are subscribed to the Google Groups > "NLUG" group. > To post to this group, send email to nlug-talk@googlegroups.com > To unsubscribe from this group, send email to nlug-talk+unsubscribe@ > googlegroups.com > For more options, visit this group at http://groups.google.com/ > group/nlug-talk?hl=en > > --- > You received this message because you are subscribed to the Google Groups > "NLUG" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to nlug-talk+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- -- You received this message because you are subscribed to the Google Groups "NLUG" group. 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