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Note:
If the required extension results in unacceptably large diameter cables, use two or
more smaller gauge wires to achieve the required copper wire cross-section. For example,
using two pairs of 2 mm
2
is equivalent to using two single 4.0 mm
2
cables.
24 V and 32 V systems
These systems are less sensitive than 12 V systems to voltage loss in the power
cables. However, it is still necessary to use adequate cables to prevent excessive
power loss. The table below gives the recommended wire gauge for different
power cable extension lengths. Raymarine recommends that power is fed directly
from the output of the battery isolator switch via its own dedicated cable system.
CAUTION:
The display unit does not include a fuse for scanner power, so an
in-line fuse or circuit breaker MUST be included in the power
cable.
Note:
If the required extension results in unacceptably large diameter cables, use two or
more smaller gauge wires to achieve the required copper wire cross-section. For example,
using two pairs of 2 mm
2
is equivalent to using two single 4.0 mm
2
cables.
Table 2-3: Max. Extension Power Cable Lengths (m), 12 V Systems -
4 kW scanners
Power Cable Core Size (each core)
mm
2
:
AWG:
4.0
11
6.0
10
8.0
8
10.0
7
4 kW Scanners <3.0 4.5 6.0 7.5
Table 2-4: Max. Extension Power Cable Lengths (m), 24/32 V Systems -
4 kW Scanners
Power Cable Core Size (each core)
mm
2
:
AWG:
2.0
14
4.0
11
6.0
10
8.0
8
10.0
7
4 kW Scanners 8.0 16.0 24 32 35