Raymarine A Series A50, Installation Instructions Manual

Page: 22 / 60

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22 A-Series display - Installation instructions
3.3 Power connection
Grounding
• Use a dedicated earthing plate (e.g. dynaplate) in contact with
the water.
• Ground cables may be routed to a common point (e.g. within the
switch panel. With a single (appropriately rated) copper braid
connecting to the earthing plate.
• Use flat tinned copper braid, 30 A rating (1/4 inch) or greater.
Equivalent stranded wire diameter 4mm or greater.
• Keep the length of the earth braid as short as possible.
A-Series power cable
A-Series power cable extension
The following restriction applies to any extension to the power cable:
Fuses & circuit protection
WARNING: Grounding
This display is not intended for use on “positive”
ground boats. The power input cable drain wires
must be connected directly to the boats ground.
Data
Ship's ground
D11354-1
PWR/NMEA SONAR
Chart plotter / Fishfinder
A-Series display
Red +ve
Black -ve
Black drainwire
Cable Part No Notes
2 m (6.56 ft)
A50/A57/A70 Power
and NMEA Cable R62157 Supplied with A-Series unit.
For other cables and accessories refer to Options and accessories on page 56 .
Length (max) Cable gauge (AWG)
10m (32.8 ft) 14
Equipment
Thermal
breaker
Fuse
A50, A50D, A57D, A70, A70D 10A 10A