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What You Really Need to Know About LP Cable

What Is This White Paper About?

To address issues of temperature rise in Power over Ethernet (PoE) cables, Underwriters Laboratories recently released a Limited Power (LP) cable certification. Most applications won’t require LP cable, but there are a few situations when it may be needed.

When more power is required, the current level running through the cable rises – and the amount of heat generated within that cable increases as well. (Bundled cables are especially vulnerable to higher temperatures; the heat generated by the current passing through the inner cables can’t escape, contributing to higher overall temperatures.) This may reduce cable performance and reliability by pushing cables beyond their rated temperatures.

Belden is here to answer your questions about LP cable. We can help you determine whether LP cable is necessary for your application.

Topics covered in the White Paper:

  1. LP Certification Explained

  2. Testing for LP Cables: The Process

  3. When LP Cable is Recommended

  4. What the National Electrical Code Says

  5. The Impacts of Temperature Rise on LP Cable

  6. Length Limitations at High Temperatures Chart

  7. Connector Limits with High Temperature Chart


Download the white paper to learn what you really need to know about LP Cables.

About The Author:


Ron Tellas

Ron is the Technology and Applications Manager for LAN at Belden. He represents Belden in the ISO WG3 committee and TIA TR42 Premises Cabling Standards and serves as the editor of the revision to TIA TSB-184; Guidelines for Supporting Power Delivery Over Balanced Twisted-Pair Cabling.

Ron has a Bachelor of Science degree in Electrical Engineering from Purdue University, a Master of Science degree in Electrical Engineering from Illinois Institute of Technology, and a Master of Business Administration from Purdue University.

Who Is Belden?

For more than 100 years, customers who have required unsurpassed performance and durability for signal transmission have counted on the Belden brand. In the 20th century, that trust was built on high-performance wire and cable products.

Today, Belden designs, manufactures and sells a comprehensive portfolio of cable, connectivity and networking products for the transmission of signals for data, sound and video applications.