42 | SAMLEX AMERICA INC.
SAMLEX AMERICA INC. | 43
Table 8.2 Recommended Sizing of Battery Cables and External Battery Side Fuse
Model
No.
(1)
Rated
Continuous
DC Input
Current
(See
Note 1)
(2)
Minimum
Ampacity
of cable as
per NEC
(See
Note 2)
(3)
External
Battery
Fuse Size
(Based on
Column 2)
(See
Note 3)
(4)
Minimum cable size
(See Note 4)
Part No. of
Recommended
Samlex America
Inverter
Installation Kit
(See Note 5)
(8)
3 ft /
0.91M
(5)
6 ft /
1.83M
(6)
10 ft /
3.05M
(7)
PST-600-12
80A
100A
80A
AWG#6
AWG#4
AWG#2
DC-1000-KIT
PST-600-24
40A
50A
40A
AWG#10 AWG#10 AWG#6
DC-1000-KIT
NOTES FOR TABLE 8.2
1) Column 2 indicates the value of the rated continuous DC input current drawn from
the battery. The overall current capacity of the internal DC input fusing is the same as
this value.
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 Continuous 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 (Col-
umn 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. MRBF-XXX Series fuses made by Cooper Bussmann may also
be used. These fuses comply with ISO-8820-6 for road vehicles.
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
SECTION 8 |
Installation
