Installation manual

Wiring the NSO | 25
Power
NSO Marine Processor NSO Power Connector
12
3
Power Cable (000-00129-001) 2 m (6 ft) Pin Wire
color
Function
1 Black Battery (-)
2 Red Battery (+)
12 - 24 V DC
3 GRN /
Yellow
Ships Ground if
available
Connecting power
• NSO marine processor ships with a 6 ft (2 m) power cable. This can be extended
using the following guidelines:
- for a cable length up to 15 ft (5 m), use 14-gauge wire or heavier
- for a cable length from 15 ft (5 m) to 30 ft (10 m), use 12-gauge wire or heavier
• If you lengthen the power cable, use an external fuse at the battery end as an added
safety precaution. The fuse size should be chosen to be appropriate for the size of
the smallest conductor in the circuit. See the NMEA or American Boating and Yachting
Counsel specifications to find the correct fuse for your wiring.
• For the best protection from noise, connect the power wiring directly to the battery
or dedicated electronics bus. The green ground wire can be connected to the ship’s
ground if available. The power cable has an in-line fuse on the positive and negative
side to protect the vessel’s wiring, and prevent electrical fires and damage to the
unit. If you shorten or lengthen this cable, be sure to keep the in-line fuse intact (or
provide circuit protection).
• Spare in-line fuses are standard automotive type and are not supplied with the unit
and should be purchased locally to avoid loss of function.
• The NSO can operate on voltages ranging from 10 V DC to 35 V DC.
12 - 24 V DC
+
_
The red wire should always be
connected to (+) DC V. A 10 Amp
blade fuse is provided or use
thermal breaker (10 Amp)
The black wire should also be
protected using a 10 amp blade
fuse provided
The green ground wire can be
connected to ship’s ground if
available