From: [email protected] Subject: NEC 800-4 Query
Hello to all, I need some assistance. particularly from those versed in the National Electric Code (NEC). I've been researching the NEC and in particular Acticle 800-4. Equipment, which states: "Equipment intended to be electrically connected to a telecommunications network shall be listed for the purpose." I've been unable to find a definition in the NEC as to the meaning of a "telecommunications network" as it is meant in the NEC. The only references I've found to telecommunications in the NEC are: "(FPN): One way to determine applicable requirements is to refer to the Standard for Telephone Equipment, UL 1459-1987, or Communication Circuit Accessories, UL 1863-1990; and (FPN): One way to determine accepted industry practice is to refer to nationally recognized standards such as Commercial Building Telecommunications Wiring Standard, ANSI/EIA/TIA 568-1991; Commercial Building Standard for Telecommunications Pathways and Spaces, ANSI/EIA/TIA 569-1990; and Residential and Light Commercial Telecommunications Wiring Standard, ANSI/EIA/TIA 570-1991." Therefore, a few questions come to mind within the meanings of the NEC: 1. Does the term (telecommunications network) refer to public or private networks? 2. Does the term refer to networks where overvoltage conditions can be present? Maybe this can be assumed as UL1459 requires overvoltage compliance. However, UL1950 provides for classifications of TNV circuits (Annex V). 3. Does the term refer to on-premise or off-premise? 4. Will the 1999 NEC provide these definitions? 5. Is there any way for these questions to get to the appropriate NEC committee for a response? Any assistance would be greatly appreciated. Best regards, Ron Pickard [email protected]
