Grounding & Electrical Warnings - Recom RCM 6MB Series Installation And Safety Instructions

6. GROUNDING & ELECTRICAL WARNINGS
Grounding
• Module frames and structures grounding must be compliant with all national and local regulations.
• RECOM recommends grounding all module frames and associated structures in order to maintain a ze-
ro-voltage potential between the electrically conductive equipment and the earth in all scenarios.
• RECOM modules use a coated aluminum frame for corrosion resistance. In order to ensure proper ground-
ing the coating must be penetrated by the grounding method. A copper grounding wire with a minimum
gauge of 12 AWG is recommended to carry the electrical ground load. Consult applicable codes to ensure
the appropriate conductor diameter is used for the system. The grounding method must not allow direct
contact of dissimilar metals with the frame of the module, as this would result in galvanic corrosion. UL
1703 recommends metal combinations not to exceed a voltage potential of 0.5.
• The frame has predrilled holes marked with a grounding sign as illustrated in the following Figure. These
holes should be used exclusively for grounding. Do not drill additional holes or modify existing holes in
the frame.
Electrical Installation Warnings
• Installation and maintenance should be performed by qualified personnel only.
• Use only insulated tools during installation, troubleshooting and maintenance of photovoltaicl modules.
• Installers should adhere to all applicable local, regional and national codes and regulations when designing
and constructing the photovoltaic system.
Installation Instructions UL-1703 and IEC / Rev. 05-2018 V.5
RECOM © Copyright 2018
UL AND IEC INSTALLATION GUIDE
Figure: Image of the grounding holes
p. 12 of 14
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