Issue link: http://www.epageflip.net/i/1043933
November/December 2018 I 17 It is important to consider the amount of cabling involved to understand that the active equipment inside the HCP is vital. Without it, there would be an increase of all the flaws in the traditional star topology, with one being most critical: the heat in the cable. Longer cables can cause lower efficiency in power delivery, the loss being energy transformed into heat, which can lead to lower performance. All calculations for structured cabling distances are based on a temperature of 20° Celsius. If cable temperature rises, then the cable distances must be reduced. Calculation formulas can be found in both ANSI/TIA 568.2-D and ISO/IEC 11801-2. A worst-case scenario indicates that the 90 m permanent link can be reduced to 72 m at 60°C. Above 60°C, the system is non-compliant to standards and unable to provide any guaranteed performance, along with possible degradation of components. In North America, NEC can require a specific cable rating for power delivery and higher temperatures. In the rest of the world, ISO/ IEC requires control of the PoE installation to maintain the temperature below 60°C. Things to Know About the OSP Credential An OSP Designer is responsible for many factor involveds with ICT projects including the design, supervision of interbuilding cabling and infrastructure. ○ Recognized by the ICT Community ○ Provides a Unique Skillset to an ICT Designer ○ Uses the Latest Technologies, Methods and Best Practices ○ Critical in Modern High Bandwidth Applications ○ Engineered by OSP Experts Further Your Career with an Outside Plant Designer Credential! the design and inspection of the JulyAug2018_three quarter.pdf 1 10/9/2018 3:03:42 PM November/December 2018 I 17