Recommended sizes of wires and external fuses, Warning – Samlex America PST-200S-24E User Manual
Page 33
32 | SAMLEX AMERICA INC.
SAMLEX AMERICA INC. | 33
WARninG!
Use of an appropriately sized external fuse as described above is mandatory to
provide safety against fire hazard due to accidental short circuit in the battery
wires. Please note that the DC side fuse(s) inside the unit are designed to pro-
vide protection to the internal components of the inverter. These fuses will NoT
blow if there is a short circuit along the length of wires connecting the battery
and the inverter.
Recommended Sizes of Wires and external Fuses
The following sizes of wires and external fuses are recommended. The distance of 3 ft. /
6 ft. / 10 ft. is the distance between the battery and the inverter. The running length of
routing of the wire should be considered if the wiring run is not straight but circuitous.
The recommended size of wires will limit the voltage drop to 2% of the nominal battery
voltage (0.24V for 12V battery and 0.48V for the 24V battery)
The length of the wire for calculating voltage drop has been taken as 2 times the
distance between the inverter and the battery assuming that 2 lengths of wires (one
Positive and one Negative) are used for the connection. DC resistance values are based
on uncoated, stranded copper conductors at a temperature of 75°C. This temperature is
typical of operating power circuits.
Model No.
Maximum
DC input
current at
rated output
power
Size of Wire
Minimum
current
rating of
external
fuse
recommended
SAMLEX
DC Installation
Kit*
3 ft.
6 ft.
10 ft.
PST-200S-12E
240A
AWG #1
AWG #3/0
AWG #4/0
240A
DC-2500-KIT
PST-200S-24E
120A
AWG #6
AWG #4
AWG #2
120A
DC-2000-KIT
PST-150S-12E
200A
AWG #2
AWG #2/0
AWG #4/0
200A
DC-2000-KIT
PST-150S-24E
100A
AWG #8
AWG #4
AWG #2
100A
DC-1000-KIT
PST-100S-12E
160A
AWG #3
AWG #1/0
AWG #3/0
160A
DC-2000-KIT
PST-100S-24E
80A
AWG #8
AWG #6
AWG #4
80A
DC-1000-KIT
PST-60S-12E
80A
AWG #6
AWG #3
AWG #1
80A
DC-1000-KIT
PST-60S-24E
40A
AWG #12
AWG #10
AWG #6
40 A
DC-1000-KIT
*
Manufactured by Samlex America, Inc. (contains 2 wires and fuse)
seCtIOn 8 |
Installation