UL Standards & Engagement Junction Boxes for Photovoltaic Modules - Safety Requirements and Tests UL 62790

This document describes safety requirements, constructional requirements and tests for junction boxes up to 1 500 V DC for use on photovoltaic modules in accordance with class II of IEC 61140:2016. This document applies also to enclosures mounted on PV-modules containing electronic circuits for converting, controlling, monitoring or similar operations. Additional requirements concerning the relevant operations are applied under consideration of the environmental conditions of the PV-modules. This document does not apply to the electronic circuits of these devices, for which other IEC standards apply. NOTE For junction boxes in accordance with classes 0 and III of IEC 61140:2016, in photovoltaic-systems , this document can be used as a guideline.