[Distributed Generation Power Systems Equipment] Photovoltaic Modules and Panels, QIGU

See General Information for Distributed Generation Power Systems Equipment



This category covers flat-plate photovoltaic modules and panels with system voltage ratings 600 V or less intended for mounting on buildings or on ground-supported frames. Roof-mounted modules or panels are investigated for one of three mounting methods: (1) integral to the roof of a building, (2) directly on a building's roof, or (3) on a rack with a space above the roof surface.

When mounted integral to a building's roof the module serves as the waterproof membrane. Direct-mounted panels are placed upon the building's waterproof membrane (shingles or the like). Rack-mounted styles are spaced away from the building's roof member. Rack-mounted styles may also be installed separate from buildings.

Installation of modules on or integral to a building's roof system may or may not adversely affect the roof-covering materials' resistance to external fire exposure if the module has a lesser or no fire-resistance rating.

Photovoltaic modules and panels are intended to be connected to electrical loads, controllers, or to static inverters that convert the dc power the modules or panels generate to other types of power compatible with the intended loads. This category does not include AC modules; see AC Modules and Photovoltaic Modules with Integrated Electronics (QHYZ) for additional details. In addition to their voltage, current and power ratings, modules and panels are marked to indicate terminal polarity, maximum series overcurrent device rating, and minimum acceptable diode bypassing (if needed). Installation of the modules and panels, including connection between the modules and the panels and the load, static inverters or controller is intended to be in accordance with ANSI/NFPA 70, "National Electrical Code."

Authorities Having Jurisdiction should be consulted as to conformance with applicable building codes including the class of roof covering.


When applicable, modules and panels are marked "Class A," "Class B" or "Class C" to denote their resistance to external fire exposure. Modules and panels that have not been identified with respect to their resistance to external fire exposure are marked "Not Fire Rated." For significance of external fire exposure classes, see Roof-covering Materials (TEVT) and Roofing Systems (TGFU).


One of the following product identities appears on the product:

    Photovoltaic Module

    Photovoltaic Panel


For additional information, see Electrical Equipment for Use in Ordinary Locations (AALZ).


The basic standards used to investigate products in this category are:

ANSI/UL 1703, "Flat-Plate Photovoltaic Modules and Panels," or
ANSI/UL 61730-1, "Photovoltaic (PV) Module Safety Qualification - Part 1: Requirements for Construction," and ANSI/UL 61730-2, "Photovoltaic (PV) Module Safety Qualification - Part 2: Requirements for Testing."

Some products covered under this category have also been investigated to one or more of the following design qualification standards:

IEEE 1262, "IEEE Recommended Practice for Qualification of Photovoltaic (PV) Modules"
IEC 61215, "Crystalline Silicon Terrestrial Photovoltaic Modules - Design Qualification and Type Approval"
IEC 61646, "Thin-film Terrestrial Photovoltaic Modules - Design Qualification and Approval"
IEC 61730, "Photovoltaic (PV) Module Safety Qualification"
EN 61730, "Photovoltaic (PV) Module Safety Qualification"


The Certification Mark of UL on the product is the only method provided by UL to identify products manufactured under its Certification and Follow-Up Service. The Certification Mark for these products includes the UL symbol, the words "CERTIFIED" and "SAFETY," the geographic identifier(s), and a file number.

Additional Certification Markings

For those products which are also certified by UL to IEEE, IEC and/or EN design qualification standards, one or more of the following statements is included on the product:

ALSO CERTIFIED TO IEEE 1262-[issue date]

ALSO CERTIFIED TO IEC 61215-[issue date]

ALSO CERTIFIED TO IEC 61646-[issue date]

ALSO CERTIFIED TO IEC 61730-[issue date]

ALSO CERTIFIED TO EN 61730-[issue date]

Alternate UL Mark

The Listing Mark of UL on the product is the only method provided by UL to identify products manufactured under its Listing and Follow-Up Service. The Listing Mark for these products includes the UL symbol (as illustrated in the Introduction of this Directory) together with the word "LISTED," a control number, and the product name "Photovoltaic Module" or "Photovoltaic Panel."

Combination Listing/Classification Mark — A Listing Mark combined with a Classification Mark is provided on products that have additionally been investigated to IEEE, IEC or EN design qualification standards. The combined Listing/Classification Mark consists of the Listing Mark elements detailed above and the following marking: "ALSO CLASSIFIED IN ACCORDANCE WITH *," where "*" is one or more of the following:

IEEE 1262-(issue date)
IEC 61215-(issue date)
IEC 61646-(issue date)
IEC 61730-(issue date)
EN 61730-(issue date)

* * * * * * * * * * * * * * * * * * * * * * * * *

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Photovoltaic PanelsPV ModulesPV Panels
Last Updated on 2018-05-16
QIGU.GuideInfo QIGU Active 20180516 20180517

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