November 11, 20223 yr Hi First post here. I would like any information about suppliers of "digital electricity" or POE for lighting specifically in South Africa. I first saw this concept in this video - see segment that starts at 11:18. Form the video I was able to look at https://voltserver.com/ and https://lumencache.lighting/ Are there similar systems available in South Africa ? Any feedback will be appreciated.
November 14, 20223 yr On 2022/11/11 at 2:31 PM, PhotonSmart said: Are there similar systems available in South Africa ? Any feedback will be appreciated. Possibly/probably, but I'm guessing at a premium since its a niche market and now, the problem starts... you get passive PoE, where 100Mb/sec ethernet cabling uses the usual 2 pairs and the other 2 pairs are used to transport power, but, this not being a standard really, at what Voltage? and how much current? See this to keep you occupied for a while you get 802.3af which at least specified a minimum of 44V and 350mA for powering the device at the end and yes, in all cases there would be a switch mode PSU/Converter in the device, since very few devices can use 40-oddV, but running higher currents over these cables is problematic... heat/smoke/fire else might be expected... you also get 802.3at and since then, even 802.3bt and even expansion into PoDL (Power over Data Line)... The problem is what standard is being supported, Ubiquity were one of the biggest offenders in doing their own proprietary power over ethernet at 24V to their Microwave kit, there are some which adhere to 802.3at spec, but most don't and 802.3af doesn't support gigabit ethernet, as far as I know, whereas 802.3at does and the 802.3bt spec ups the ante up to 70W or so of power supplied to the end of the line device, possibly, but this is not roll your own plug and play stuff, there is comms between the device powered via PoE switch(es) and the switch itself... Edited November 14, 20223 yr by Kalahari Meerkat grammatik and speeling
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