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Planning Preparations
This guide for use by qualified personnel only.
DC Components
Batteries
The Freedom SW 230V system requires a 24-volt, lead-acid deep-
cycle battery or group of batteries to provide the DC current that the
inverter/charger converts to AC power. The battery may be a
flooded, gel, or AGM type.
See “Battery Information” on page 52 for information on:
• Estimating the battery size that will meet your requirements.
• Designing battery banks.
• Restrictions on the size of appliances.
For information on cabling and hooking up batteries, see “Battery
Cabling and Hook-up Configurations” on page 57.
For detailed information about specific brands of batteries, consult
individual battery manufacturers.
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. In
Australia, they must be rated 90°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
a
Sizes
a. Copper conductors with thermoplastic insulation rated at 75C or higher. In Australia,
thermoplastic insulation must be rated at 90C or higher.
Conduit (Free Air)
Model
Typical
Amps
(A)
Cable Length
< 1.5 m
Cable Length
1.5 to 3.0 m
Freedom SW 2524-230 140 50 mm
2
(25 mm
2
) 70 mm
2
(35 mm
2
)
Freedom SW 3524-230 200 240 mm
2
(120 mm
2
) 300 mm
2
(150 mm
2
)
IMPORTANT:
Longer cables may cause the inverter to shut down under
a heavy load.
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.
Freedom SW 3K2K 230V InvChg Install Guide.book Page 13 Friday, June 20, 2014 9:11 AM