Raymarine C120W, Installation Manual

Page: 24 / 92

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.
Grounding
The following requirements apply when grounding Raymarine
equipment:
• 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 4 mm or greater.
• Keep the length of the earth braid as short as possible.
Power cable
The C-Series display is supplied with a combined power and data
multi cable, this can be extended if required.
Power cable supplied
Cable Part number Notes
1.5 m (4.9 ft) Power and
data cable R62131 Supplied with C-Series
unit
Cable extension
The following restrictions apply to any extension to the power cable:
• Cable must be of a suitable gauge for the circuit load.
• Each unit should have its own dedicated power cable wired back
to the distribution panel.
Total length (max) Supply voltage
Cable gauge
(AWG)
12 V 18 0–5 m (0–16.4 ft)
24 V 20
12 V 14 5–10 m (16.4–32.8 ft)
24 V 18
12 V 12 10–15 m (32.8–49.2 ft)
24 V 16
12 V 12 15–20 m (49.2–65.5 ft)
24 V 14
Note: These distances are for a 2 wire power cable run from the battery to
the display (approximately the distance from the battery to the display). To
calculate the round trip length, double the figure stated here.
Breakers, fuses and circuit protection
The C-Series Widescreen power cable includes an in-line fuse. You
can use an additional thermal breaker or fuse at the distribution
panel if you wish.
24 C-Series Widescreen installation