Lantronix SESPM Series SESPM Series Install Guide Rev F - Page 27

Lantronix SESPM1040-541-LT-xx Install Guide Cable and Cabling • The 802.3bt standard allows Cat 5e for 60W but requires Cat 6 cable for 90W. • You can use Category 5e or 6A cable, but remember: o Cat 6A has larger bundle sizes, o Cat 6A can go longer reaches with PoE, and o Category 6A is 4.3 W more efficient per link. • For Cat 5e use 4-pair Category 5e or higher. Use UV-resistant Cat5e or Cat 6 cable. • If the channel is standards compliant Cat 5e to Cat 6A at 100 meters or less, the PD will get the power it needs. • Standards governing cabling PoE: o IEEE 802.3bt Task Force: overall standard governing equipment and cabling. o TIA TSB-184-A: Technical Service Bulletin on "Guidelines for Supporting Power Delivery Over Balanced Twisted-Pair Cabling". o ISO/IEC TR-29125 and CENELEC TR 50174-99-1 (International cabling guidelines for PoE++). o ANSI/TIA-568-C.2 (familiar standard covering cabling performance). o IEC 60512-99-002 (standard for connectivity with engaging / disengaging PoE). • Recommend: understand ambient temperature and bundle temperature specs and requirements. • The 2017 NEC® Code applies to power supplied over a communications cable when power levels are over 60 watts (i.e., for PoE++ Type 4). • Heat of cable is governed by Ambient temperature, Type of PoE used, Category cable type (and its implementation), and Bundle size. Consult your cable vendor for specific performance. • If using more than one 90W port, alternate ports (i.e., no adjacent 90W ports). Use ports 1 and 3, or ports 1 and 4, or ports 2 and 4. Exception: using ports 2 and 3 for 90W each is allowed. 33772 Rev. F https://www.lantronix.com/ Page 27 of 64