SamplexPower PST-1500-12 Mode D'emploi page 34

SECTION 8 |
Table 8.2 Recommended Sizing of Battery Cables and External Battery Side Fuse
(continued from previous page)
Model No. Rated
DC Input
Current
(See
Note 1)
(1) (2)
PST-2000-12 240A
PST-2000-24 120A
NOTES FOR TABLE 8.2
1) Column 2 indicates the Rated DC Input Current drawn from the battery.
2) Column 3 indicates minimum NEC Ampacity for sizing of conductors. NEC Ampacity
is not less than 125% of the rated continuous DC input current (Column 2) - Refer to
NEC-2014 (National Electrical Code) - Section 215.2(A)(1)(a) for Feeder Circuits.
3) Column (4) indicates the size of external fuse in the battery circuit. It is mandatory to
install this fuse within 7" of the battery Positive terminal to protect the battery cables
against short circuit. Amp rating of the fuse is based on the following considerations:
a) Not less than the Rated DC Input Current (Column 2)
b) Closest Standard Ampere Rating of Fuse has been used - Refer to NEC-2014
(National Electrical Code) - Section 240.6(A)
c) Where Standard Fuse Rating does not match the required Ampacity
(Column 2), the next higher Standard Rating of the fuse has been used -
Refer to NEC-2014 (National Electrical Code) - Section 240.4(B)
d) Type of fuse: Fast-acting, Current Limiting, UL Class T (UL Standard 248-15)
or equivalent
4) Columns 5 to 7 indicate minimum cable conductor size that is based on the following 2
considerations. Thicker conductor out of the following 2 considerations has been chosen:
a) As per guidelines in ISO 10133 for 105°C cable insulation and cable running in free
air. Conductor size is based on:
(i) NEC Ampacity specified at Column 3,
(ii) Copper conductor with temperature rating of 105˚C/221˚F and
(iii) Ambient temperature of 30°C / 86°F)
34 | SAMLEX AMERICA INC.
Installation
Minimum External
Ampacity Battery
of cable as Fuse Size
per NEC (Based on
(See Column 2)
Note 2) (See
Note 3)
(3) (4)
300A 240A
150A 120A
Minimum cable size
(See Note 4)
3 ft / 6 ft /
0.91M 1.83M
(5) (6)
AWG#2/0 AWG#2/0
AWG#4 AWG#4
Part No.
of Recom-
mended
Samlex
10 ft /
America
3.05M
Inverter
Installa-
tion Kit
(See
Note 5)
(7)
(8)
AWG#4/0 DC-2500-
KIT (2.5%
drop for
10 ft)
AWG#2 DC-2000-
KIT