Mtunda wotetezedwa wamagetsi a POE ndi 100 metres, ndipo tikulimbikitsidwa kugwiritsa ntchito chingwe chamtundu wamkuwa cha Cat 5e.Ndizotheka kufalitsa mphamvu ya DC ndi chingwe chokhazikika cha Efaneti kwa mtunda wautali, ndiye chifukwa chiyani mtunda wotumizira umakhala wamamita 100?
Chowonadi ndi chakuti mtunda wautali wotumizira wosinthira wa PoE makamaka umadalira mtunda wotumizira deta.Pamene mtunda wotumizira uposa mamita 100, kuchedwa kwa deta ndi kutayika kwa paketi kumatha kuchitika.Choncho, mtunda wotumizira suyenera kupitirira mamita 100 pakupanga kwenikweni.

Komabe, pali kale masiwichi a PoE omwe ali ndi mtunda wofikira mpaka 250 metres, womwe ndi wokwanira kuperekera mphamvu mtunda wautali.Akukhulupiriranso kuti ndi chitukuko chaukadaulo wamagetsi a PoE posachedwa, mtunda wotumizira udzakulitsidwa patali.

Muyezo wa POE IEEE 802.3af umafuna kuti mphamvu yotulutsa mphamvu ya doko la PSE ndi 15.4W kapena 15.5W, ndipo mphamvu yolandiridwa ya chipangizo cha PD pambuyo pa 100 mamita otumizira sayenera kukhala osachepera 12.95W.Malinga ndi 802.3af mtengo wamakono wa 350ma, kukana kwa chingwe cha netiweki cha mita 100 kuyenera kukhala Ndi (15.4-12.95W)/350ma = 7 ohms kapena (15.5-12.95)/350ma = 7.29 ohms.Chingwe chokhazikika cha netiweki chimakwaniritsa izi.Muyezo wamagetsi wa IEEE 802.3af poe wokha umayesedwa ndi chingwe chokhazikika cha netiweki.Chifukwa chokha cha vuto la POE mphamvu magetsi maukonde chingwe amafuna kuti zingwe zambiri maukonde pa msika si muyezo maukonde zingwe ndipo si opangidwa mosamalitsa malinga ndi zofunika za zingwe muyezo maukonde.Zida zamagetsi zomwe sizili zovomerezeka pamsika zimaphatikizanso zitsulo zamkuwa, zitsulo zamkuwa, aluminiyamu yamkuwa, chitsulo chamkuwa, ndi zina zotero. Zingwezi zimakhala ndi mfundo zazikulu zotsutsa ndipo siziyenera kuperekedwa kwa POE.Mphamvu ya POE iyenera kugwiritsa ntchito chingwe cha netiweki chopangidwa ndi mkuwa wopanda mpweya, ndiye kuti, chingwe chokhazikika cha netiweki.Ukadaulo wamagetsi wa PoE uli ndi zofunika kwambiri pamawaya.Ndibwino kuti poyang'anira ntchito, musamasunge ndalama pa mawaya.Zopindula zimaposa zotayika.