Power Connection - Raymarine AIS350 Installation Instructions Manual

2.8 Power connection

Power supply protection
Always protect the power supply by connecting the red (positive)
wire to the supply via a 5 A fuse or equivalent automatic circuit
breaker.
Sharing a breaker
Where more than 1 piece of equipment shares a breaker you must
provide protection for the individual circuits. E.g. by connecting an
in-line fuse for each power circuit.
+VE bar
Where possible, connect individual items of
equipment to individual circuit breakers.
Where this not possible, use individual in-line
fuses to provide the necessary protection.
Circuit breaker
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-VE bar
Fuse Fuse
Warning: Product grounding
Before applying power to this product, ensure it has
been correctly grounded, in accordance with the
instructions in this guide.
Grounding
The following requirements apply when grounding Raymarine
equipment which does not have a dedicated drain wire or shield:
Common ground point
The negative wire must be connected to a bonded common ground
point, i. e. with the ground point connected to battery negative, and
situated as close as possible to the battery negative terminal.
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1. Power cable to display
2. Bonded common ground connection
3. Battery
Implementation
If several items require grounding, they may be first be connected
to a single local point (e.g. within a switch panel), with this point
connected via a single, appropriately-rated conductor, to the boat's
common ground.
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AIS350 / AIS650 Installation instruction