Applications & Considerations for Limited Power Cable

White paper Belden

What You Need to Know

In this White Paper:

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 however, there are some circumstances 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 the cable—bundled cables are particularly vulnerable to higher temperatures as the heat generated by the current passing through the innermost cables can’t escape, leading to higher overall temperatures. This rise in temperature can reduce cable performance and reliability by pushing cables beyond rated temperatures.

In this White Paper, we cover LP cable in depth and provide guidance for determining when limited power cable is necessary.

  • Limited power certification
  • LP cable testing process
  • National Electrical Code & recommendations for use
  • Temperature rise impacts
  • Length & connector limitations 

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