UL 3741-2020 pdf download – Photovoltaic Hazard Control.
16 General 16.1 The manufacturing and production testing shall be done in accordance with the applicable component or end product standard accounting for the functionality of the PVHCE or PVHCS. MARKINGS Advisory Note: In Canada, there are two official languages, English and French. Annex C provides translations in French ofthe English safety markings specified in this standard. Markings required by this standard may have to be provided in other languages to conform with the language requirements of the countrywhere the product is to be used. 17 General 17.1 The markings including signage required for compliance to this standard shall be legible and permanent such as metal stamped, etched, adhesive labels, etc. An adhesive-backed label shall comply with the requirements in UL 969, or C22.2 No. 0.15, for the intended exposure conditions and surface adhered to. 17.2 Markings and signage shall be in lettering that is sized so that it is legible from the distance from which is must be read and shall have lettering in a color that contrasts with the background. NOTE: Guidance for markings and signs can be found in standards such as the ISO 3864-2, NEMA Z535.1, NEMA Z535.2, NEMA Z535.3, NEMA Z535.4, and NEMA Z535.5. 17.3 PVHC equipment and components that are critical for compliance of the PVHCS, shall be marked with the manufacturer’s name, trade name, trademark or other descriptive marking which identifies the organization responsible for the product, part number or model number. Exception: PVHC components identified in the installation instructions need not be marked on the component. 17.4 The control devices and indicators required for operation or maintenance shall be marked with their function on or adjacent to the control.
18.2 All cautionary markings and ratings unique to the PVHC function of the equipment or system, as well as system specifications needed for installation and operation of the system, shall be included in the instructions. NOTE: These ratings would typically include but are not limited to: PVHC Maximum Circuit Voltage, Rated Temperature Operating Range and other markings from 17.5. 18.3 PVHC instructions shall include the following: “WARNING: To Reduce the Risk of Injury, read all instructions”. 18.4 Instructions shall be provided as required by the individual PVHC system, equipment and components and as necessary for the proper installation of the PHVC equipment and components. 18.5 An identified list of PVHCE and PVHCC determined to be necessary for the PV hazard control function shall be provided in the instructions. 18.6 Restrictions on the characteristics of other equipment connected to the PV array that are essential to maintain the operational integrity of the hazard control function shall be documented in the instructions. 18.7 Any design constraints that must be placed on the equipment such as; a maximum or minimum slope or angle, limitations on quantities of equipment/components and limitations on the distances or clearances, shall be included in the instructions.