2020 National Electrical Code Chapter 8 Communications Systems Article 800 Communications Circuits Section:820.48 Unlisted Cables Entering Buildings. Unlisted outside plant coaxial cables shall be permitted to be installed in building…
What is the minimum separation that shall be maintained, where practicable, between lightning conductors and communications wires and cables on buildings?
2020 National Electrical Code Chapter 8 Communications Systems Article 800 Communications Circuits Section:800.53 Separation from Lightning Conductors. Where practicable, a separation of at least 1.8 m (6 ft) shall be…
What is the minimum clearance for communications wires and cables above all points of roofs above which they pass?
2020 National Electrical Code Chapter 8 Communications Systems Article 800 Communications Circuits Section:800.44 Overhead (Aerial) Wires and Cables. Sub-section:800.44(B) Above Roofs. Communications wires and cables and CATV type coaxial cables…
How far must the separation be between any light, power, or Class 1 conductors or radio and television conductors, and underground antenna conductors for radio and television receiving equipment.
2020 National Electrical Code Chapter 8 Communications Systems Article 810 Radio and Television Equipment Section:810.18 Clearances - Receiving Stations. Sub-section:810.18(A) Outside of Buildings. Lead-in conductors attached to buildings shall be…
True or False: It is required that equipment intended for permanent electrical connection to a communications network be listed or labeled..
2020 National Electrical Code Chapter 8 Communications Systems Article 800 General Requirements for Communications Circuits Section:800.3 Installation and Use. The requirements of 110.3(B) shall apply Section:110.3(B) Installation and Use. Equipment that is…
If communications cables are installed on the surface of ceilings or walls, they must be supported by the building structure so that normal building use will not damage the cable, if it is:
2020 National Electrical Code Chapter 8 Communications Systems Article 800 Communications Circuits Section:800.24 Mechanical Execution of Work. Circuits and equipment shall be installed in a neat and workmanlike manner. Cables…
True or False: If communications cable is abandoned, accessible portions must be removed.
2020 National Electrical Code Chapter 8 Communications Systems Article 800 Communications Circuits Section:800.25 Abandoned Cables. The accessible portion of abandoned communications cables shall be removed. Where cables are identified for…
What is the minimum separation for overhead communications wires and cables at any point in the span from supply service-drops of up to 750 volts?
2020 National Electrical Code Chapter 8 Communications Systems Article 800 Communications Circuits Section:800.44 Overhead (Aerial) Communications Wires and Cables. Sub-section:800.44(A)On Poles and In-Span. Sub-section:800.44(A)(4) Clearance. Supply service drops and sets…
The wiring methods of Article 830 shall be permitted to substitute for the wiring methods of ____________..
2020 National Electrical Code Chapter 8 Communications Systems Article 820 Community Antenna Television and Radio Distribution Systems Section:820.3(B). The wiring methods of Article 830 shall be permitted to substitute for the wiring…
If the current supply is from a transformer or other power-limiting device, CATV coaxial cable can deliver power to directly associated with the radio frequency distribution system equipment, as long as the voltage does not exceed:
2020 National Electrical Code Chapter 8 Communications Systems Article 820 Community Antenna Television and Radio Distribution Systems Section:820.15 Power Limitations. Coaxial cable shall be permitted to deliver power to equipment…