SECTION 8 |
Installation
36
8.4.5 Recommended Sizes of Battery Cables and Fuses
Sizes of cables and fuses are shown in table 8.2. Sizing is based on safety
considerations in UL-458, NEC-2014 and ISo -10133. Please refer to “Notes for table
8.2” for details.
TABLE 8.2 RECOMMENDED SIZING OF BATTERY CABLES AND EXTERNAL BATTERY SIDE FUSE
Model No.
Maximum
Continuous DC
input current
Maximum
External Battery
Fuse Size
Minimum cable size (See Note 4)
<1.5 mm
2
>1.6 - 3 mm
2
SWI 3000-12
360A
400-500A
95
120
SWI 3000-24
180A
300A
50
70
8.4.6 DC Input Connection
The DC input terminals for battery connection (14 & 16 in fig. 6.1c) have nut and bolt
connection - bolt size is 5/16” (18 threads per inch). Use ring tongue type of terminals
on the wire ends to fit 5/16” bolt size.
8.4.7 Reducing RF Interference
Please comply with recommendations given in Section 3 - “Limiting Electromagnetic
Interference”.
8.5 AC SIDE CONNECTIONS
WARNING! Preventing Paralleling of the AC Output
1. The AC output of the inverter cannot be synchronized with another AC
source and hence, it is not suitable for paralleling. The AC output of the
inverter should never be connected directly to an electrical Panelboard
/ Load Center which is also fed from the utility power/ generator. Such a
connection will result in parallel operation and AC power from the utility
/ generator will be fed back into the inverter which will instantly damage
the output section of the inverter and may also pose a fire and safety
hazard. If an electrical Panelboard / Load Center is being fed from the
utility power / generator and the inverter is required to feed this panel
as backup power source, the AC power from the utility power/ generator
and the inverter should first be fed to a manual selector switch /
Automatic Transfer Switch and the output of the manual selector
switch / Automatic Transfer Switch should be connected to the electrical
Panelboard / Load Center.
