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Planning Preparations
DC Cabling
Definition DC cabling includes all of the cables and
connectors between the batteries, the DC disconnect and
overcurrent protection device, and the inverter/charger.
Type All installations require multi-strand insulated cables.
The DC cables must be copper and must be rated 75°C
minimum.
Size and Length See Table 2 for required DC cable length
and cable size and Table 3 for required fuse size for the
Freedom SW 230V. Wire size is usually marked on the
cables.
Table 2 Minimum Recommended Battery Cable
Typical
Model
Amps
(A)
Freedom SW 2524-
140
230
Freedom SW 3524-
200
240 mm
230
a. Copper conductors with thermoplastic insulation rated at 75C
IMPORTANT:
Longer cables may cause the inverter to shut down under a
heavy load.
14
a
Conduit (Free Air)
Cable Length
Cable Length
< 1.5 m
1.5 to 3.0 m
2
2
2
50 mm
(25 mm
)
70 mm
(35 mm
2
2
2
(120 mm
)
300 mm
(150 mm
FIRE HAZARD
Undersized cables will overheat. Consult local electrical codes to
determine minimum required size.
Failure to follow these instructions can result in death or serious injury.
DC Disconnects and Over-Current Devices
The DC circuit from the battery to the inverter/charger must
be equipped with a disconnect and overcurrent protection
device. Refer to your applicable installation code for
guidance.
Sizes
Type This device usually consists of a circuit breaker, a "fused-
disconnect," or a separate fuse and DC disconnect. Do not confuse
AC circuit breakers with DC circuit breakers. They are not
interchangeable.
2
Rating The rating of the fuse or breaker must be matched to
)
the size of cables used in accordance with the applicable
2
)
installation codes.
Location The breaker or fuse and disconnect should be
located as close as possible to the battery in the positive cable.
Applicable codes may limit how far the protection can be
from the battery.
Freedom SW 230V Installation Guide
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