1 Scope

1.1 These requirements cover antenna-discharge units for radio and television receiving equipment and amateur radio-transmitting and -receiving equipment, to be employed in accordance with the National Electrical Code, NFPA 70.

1.2 An antenna-discharge unit – hereinafter referred to as a discharge unit – as covered by these requirements consists of a gap, a fixed resistance or other discharge element, or a combination of such features, connected between each antenna lead-in terminal and a grounding terminal.

Summary of Topics

This revision of ANSI/UL 452 dated August 6, 2021 is being issued to update the title page to reflect the most recent designation as a Reaffirmed American National Standard (ANS). No technical changes have been made.