• Ideally, all equipment should be wired to individual
suitably-rated thermal breakers or fuses, with
appropriate circuit protection. Where this is not
possible and more than 1 item of equipment
shares a breaker, use individual in-line fuses
for each power circuit to provide the necessary
protection.
• In all cases, observe the recommended
breaker / fuse ratings provided in the product’s
documentation.
• If you need to extend the length of the power cable
supplied with your product, ensure you observe
the dedicated
Power cable extensions
advice
provided in the product’s documentation.
Important:
Be aware that the suitable fuse rating
for the thermal breaker or fuse is dependent on the
number of devices you are connecting.
Grounding
Ensure that you observe the separate grounding
advice provided in the product’s documentation.
More information
Raymarine recommends 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
Power cable extension
The product is supplied with a power cable, which
can be extended if required.
• The power cable for each unit in your system
should be run as a separate, single length of
2-wire cable from the unit to the vessel's battery or
distribution panel.
• Raymarine recommends a
minimum
wire gauge
of 18AWG (0.82 mm
2
) for any length of cable
extension.
• For all lengths of extension to the power cable,
ensure there is a continuous
minimum
voltage
at the product’s power connector of 10.8 V with a
fully flat battery at 11 V.
Important:
Be aware that some products in
your system (such as sonar modules) can create
voltage peaks at certain times, which may impact
the voltage available to other products during the
peaks.
Grounding — Dedicated drain wire
The power cable supplied with this product includes
a dedicated shield (drain) wire for connection to a
vessel's RF ground point.
It is important that an effective RF ground is
connected to the system. A single ground point
should be used for all equipment. The unit can be
grounded by connecting the shield (drain) wire of
the power cable to the vessel's RF ground point.
On vessels without an RF ground system the shield
(drain) wire should be connected directly to the
negative battery terminal.
The dc power system should be either:
• Negative grounded, with the negative battery
terminal connected to the vessel's ground.
•
Floating, with neither battery terminal connected
to the vessel's ground
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.
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Dragonfly–4 / Dragonfly–5 / Dragonfly–7 / Wi–Fish
