Raymarine Element 7 HV Installation Instructions Manual page 37

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It is recommended that best practice is observed in all vessel electrical installations, as detailed
in the following standards:
• BMEA Code of Practice for Electrical and Electronic Installations in Boats
• NMEA 0400 Installation Standard
• ABYC E-11 AC & DC Electrical Systems on Boats
• ABYC A-31 Battery chargers and Inverters
• ABYC TE-4 Lightning Protection
Warning: Product grounding
Before applying power to this product, ensure it has been correctly grounded, in
accordance with the instructions provided.
Warning: Positive ground systems
Do not connect this unit to a system which has positive grounding.
Connections 37