We use West Penn Wire. Their CAT 5E certifies as CAT 6 out to 300 feet. We only use CAT 6 anymore. I just got tired of carrying several spools of the different cables, so everyone in the company only carries CAT 6 Plenum.

Hal is correct. The UL ratings only address conformance to voltage breakdown and smoke emissions when burning. The NEC is a Life Safety code and there is no specifications for BERT or speed compliance.

IEEE makes specification on data carrying bandwidth and the TIA/EIA usually follows the IEEE specifications.

Rcaman

Americom, Inc.
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