Raymarine AXIOM+ Series Installation Instructions Manual page 43

Important: To ensure power cables (including any extension) are of a sufficient gauge, ensure
that there is a continuous minimum voltage of 10.8 V dc at the end of the cable where it enters
the product's power connector, even with a fully flat battery at 11 V dc. (Do not assume that a flat
battery is at 0 V dc. Due to the discharge profile and internal chemistry of batteries, the current
drops much faster than the voltage. A "fully flat" battery still shows a positive voltage, even if it
doesn't have enough current to power your device.)
Grounding
Ensure that you observe any additional grounding advice provided in the product's documentation.
More information
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 43