Plus you don't need a certified electrician in most jurisdictions, but in some they may have to be low voltage qualified On Apr 27, 2016 8:42 PM, "Eric Kuhnke" <eric.kuh...@gmail.com> wrote:
> well, you only need to put 1 AC outlet wherever the 48-port PoE switch is, > vs running 120VAC everywhere around a ceiling. So that's a 48:1 ratio at > least. > > > > On Wed, Apr 27, 2016 at 6:35 PM, Lewis Bergman <lewis.berg...@gmail.com> > wrote: > >> Since you still need AC outlets I can't imagine the savings would be all >> that significant. The industry seems to be headed to figuring out how to >> get the enormous installed base to LED. Since electricians are the Obrien >> pulling the CAT5 now I can't see how you get the cost down. >> >> On Wed, Apr 27, 2016, 7:53 PM Eric Kuhnke <eric.kuh...@gmail.com> wrote: >> >>> http://www2.cree.com/smartcast-landing-page >>> >>> Would you build it? >>> >>> Seems to make sense, considering the low cost of midspan PoE injectors >>> these days. Or even old 802.3af 100Mbps switches you can get used (Cisco >>> 3560, 3750). >>> >>> One of the neat things about doing PoE lighting is that you could >>> control all the lights in a building via a shell script and SSH session >>> into a PoE switch, turning on and off ports based on cron jobs, schedules, >>> as a result of a script server receiving some event, etc. This could be >>> done with a $50 box running Linux. >>> >>> No need to run any vendor proprietary software of any sort. >>> >>> One of the things I realized when thinking about this is that it could >>> dramatically lower labor costs to install lighting in a large building. >>> You'd be looking at the hourly labor rate for low-cost "low voltage" alarm >>> cabling/cat5e pulling install technicians and not licensed electricians >>> (apprentice or journeyman). Electricians would of course need to do the >>> rest of a building's 120/240VAC, but not the lighting. >>> >>> >>> >>> >>> >
