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810.6 Grounding of Antenna Lead-In Protectors

Change Summary

  • Antenna Lead-In Protectors, where used, shall be grounded using a bonding conductor or a grounding electrode conductor installed in accordance with 810.21(F)
  •  It must be a listed device and suitable for the cable used
  • The protector must be grounded using a bonding conductor or a grounding electrode conductor installed according to 810.21(F)
NEC® Text

 
810.6 Antenna Lead-In Protectors
Where an antenna lead-in surge protector is installed, it shall be listed as being suitable for limiting surges on the cable that connects the antenna to the receiver/transmitter electronics and shall be connected between the conductors and the grounded shield or other ground connection. The antenna lead-in protector shall be grounded using a bonding conductor or a grounding electrode conductor installed in accordance with 810.21(F).

Informational Note: For requirements covering protectors for antenna lead-in conductors, refer to UL Subject 497E, Outline of Investigation for Protectors for Antenna Lead-In Conductors.

Copyright© 2013 National Fire Protection Association

(See NEC for complete text)

Expert Analysis

Article 810 covers wiring requirements for radio and television receiving equipment, including digital satellite receiving equipment for television signals, wiring for amateur radio equipment and citizens band (CB) radio equipment. Soon it may apply to outdoor WIFI and other data broadcast, receiving and antenna equipment. Where this equipment uses exterior antennas, there is a danger of bringing lightning and other atmospheric related surges into the building, which in many cases result in a fire. This new section deals with antenna lead-in protectors. These devices may be subject to high energy lightning surges in the range of 5-50 kA or higher. Listing and compliance with appropriate requirements ensure that the protector can withstand these surges without introducing a risk of fire or personal injury (from explosions) and the protector will continue to provide surge protection after being subjected to various environmental and surge conditions that may be expected in an typical installation.

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