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CM vs. CMR vs. CMP: What's the Difference?

Lots of customers have found the letters “CM”, “CMR” and CMP” in the product description when purchasing copper cables like Cat5e cable and Cat6 cable. These terms are the most common cable jacket ratings specified by the National Electric Code (NEC). Ethernet cable jacket rating comes in a variety of different types and materials. It's important to know the differences between cm, cmr and cmp cables because each different type is used is difference locations. Let’s see the difference between CMR vs. CMP in their applications.