UL 1699-2017 pdf download – Arc-Fault Circuit-Interrupters.
1 Scope 1.1 The requirements of this Standard cover arc-fault circuit-interrupters (AFCIs) of the branch/feeder, outlet circuit, portable, and cord type intended for use in dwelling units. These devices are intended to mitigate the effects of arcing faults that may pose a risk of fire ignition under certain conditions if the arcing persists. 1.2 AFCIs have a maximum rating of 20 A and are intended for use in 1 20-V ac, 60-HZ circuits. Cord AFCIs are rated up to 30 A. 1.3 These devices are not intended to detect glowing connections. 1.4 In these requirements the term device is used generically to apply to all of the devices covered by these requirements and is modified when the requirement does not apply to all types. 1.5 An AFCI that is also intended to perform other functions, such as overcurrent protection, ground-fault circuit-interruption, surge suppression, any other similar functions, or any combination thereof, shall comply additionally with the requirements of the applicable Standard or Standards that cover devices that provide those functions. 1 .6 This standard contains a supplement covering the requirements for Leakage-Current Detector-Interrupters. 2 Glossary 2.1 For the purposes of this Standard, the following definitions apply. 2.2 ARCING – A luminous discharge of electricity across an insulating medium, usually accompanied by the partial volatilization of the electrodes. 2.3 ARCING FAULT – An unintentional arcing condition in a circuit. 2.4 ARC-FAULT CIRCUIT-INTERRUPTER (AFCI) – A device intended to mitigate the effects of arcing faults by functioning to deenergize the circuit when an arc-fault is detected. 2.5 BRANCH/FEEDER ARC-FAULT CIRCUIT-INTERRUPTER – A device intended to be installed at the origin of a branch circuit or feeder, such as at a panelboard. It is intended to provide protection of the branch circuit wiring, feeder wiring, or both, against unwanted effects of arcing. This device also provides limited protection to branch circuit extension wiring.
4 Units of Measurement 4.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 5 Undated References 5.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard. CONSTRUCTION ALL DEVICES 6 General 6.1 An AFCI shall comply with the construction requirements in Sections 6 – 15.