UL-1699:2017 pdf free download – STANDARD FOR SAFETY Arc- Fault Circuit-Interrupters.
12.4 Film-coated magnet wire is considered to be uninsulated in determining spacings.
12.5 As an alternative to the measurement method specified in 12.1 — 12.4, the minimum acceptable clearances (through air spacings) and creepage distances (over surface spacings) for a printed wiring board assembly may be evaluated as specified in 12.6 — 12.8 using the applicable requirements in the Standard for Insulation Coordination Including Clearances and Creepage Distances for Electrical Equipment, UL 840.
12.6 When applying the requirements in the Standard for Insulation Coordination Including Clearances and Creepage Distances for Electrical Equipment, UL 840, the environment for a printed wiring board assembly within an arc fault circuit-interrupter is considered to be:
a) Pollution degree 3 for an assembly without a conformal coating;
b) Pollution degree 2 for
1) An assembly with a coating,
2) An assembly without a coating when the printed wiring board is contained in a sealed housing that complies with the Dust Test, Section 57, or
c) Pollution degree 1 for an assembly with a conformal coating complying with the Printed Wiring Board Coating Performance Test, in UL 840.
12.7 For Clearance B (controlled overvoltage) requirements in the Standard for Insulation Coordination Including Clearances and Creepage Distances for Electrical Equipment, UL 840, the applicable overvoltage category for line-voltage circuits is Category Ill for branch/feeder and outlet circuit AFCIs and Category II for portable and cord AFCIs. Category I is applicable to low-voltage circuits if short circuit between the parts involved may result in operation of the controlled equipment that increases the risk of fire or electric shock. Any overvoltage protection device needed to achieve these categories shall be provided as an integral part of the arc fault circuit-interrupter.
12.8 Where measurement of clearances and creepage distances is involved to establish the minimum
spacings, the methods specified in Measurement of Clearance and Creepage Distances in the Standard for Insulation Coordination Including Clearances and Creepage Distances for Electrical Equipment, UL 840, shall be used.
13 Operating Mechanism
13.1 Compliance with the provisions of arcing fault interruption shall not be prevented by manipulation or restraint of accessible levers, knobs, and the like of a device.
13.2 A device that has tripped in accordance with the provisions of arcing fault interruption shall not be capable of automatic reclosure.
13.3 Except for an AFCI that is intended to be mounted in a panelboard, an AFCI shall operate to open both the ungrounded and grounded circuit conductors in the event of a fault.
13.4 An AFCI device that contains separate line and load terminals, intended for mounting in an outlet box, and that is powered through its load terminals, shall not reset and supply power to its line terminals. See Reverse Line — Load Miswire Test, Section 59.
14 Programmable Components
14.1 An arc-fault circuit-interrupter that employs a programmable component such as a microprocessor shall be investigated in accordance with the Standard for Software in Programmable Components, UL 1998, as defined in 14.2 — 14.8.
14.2 All of the requirements of the Standard for Software in Programmable Components, UL 1998, apply to programmable components employed in an arc-fault circuit-interrupter, except as modified by 14.3 — 14.9.
14.3 The risks to be considered for the Risk Analysis portion of UL 1998 include the following scenarios.