Chapter 2: Installing the system 25
2.8 Connect to ground
CAUTION: Grounding
The SPX-5R Drive system ground MUST be connected to ship’s
ground. Failure to connect to ship’s ground may cause it, or other on-
board electronics to malfunction.
To ground your SPX-5R Drive system:
• Use a dedicated earthing plate (e.g. dynaplate) in contact with the water.
• Use flat tinned copper braid, 30 A rating
1
/
4
inch (6.5 mm) or greater. Equivalent
stranded wire diameter
3
/
16
inch (4 mm) or greater
• Keep the length of the earth braid as short as possible.
Note: If you cannot connect to a dedicated earthing plate you may connect ground to the nega-
tive terminal of the battery (ideally at the battery itself).
D10608-1
Boat's ground
connection
Boat's battery
Preferred grounding
method
Alternative grounding
method
Course computer
AB
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