Samlexpower Evolution EVO-2212 Owner's Manual page 40

SECTIOn 3 |
tAble 3.1
item rated
continuous
Dc input
current
(See note
1)
(column 1) (column 2)
EVO-2212 266A
EVO-2224 133A
EVO-3012 373A
EVO-4024 266A
External
50A
Charger
noteS for tAble 3.1 - SiZing of bAttery SiDe cAbleS AnD eXternAl bAttery
SiDe fuSeS
1) Column 2 indicates the rated Continuous DC Input Current drawn from the
battery in Inverter Mode
2) Column 3 indicates NEC Ampacity based on which cable conductor sizes
(Columns 5 to 8) are determined. 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) Columns 5 to 8 indicate 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 NEC-2014 (National Electrical Code) - Ampacity Table
310.15(b)(16) for raceway and Ampacity Table 310.15(b)(17) for free
Air. Conductor size is based on (i) NEC Ampacity specified at Column 3,
(ii) Copper conductor with temperature rating of 90°C and (iii) Ambient
temperature of 30°C / 86°f
b) Voltage drop across the length of cables has been limited to 2% of 12V
/ 24V. Voltage drop has been calculated by multiplying the rated DC
Input Current (Column 2) and the resistance of the total length of Copper
conductor (the total length of conductor has been taken as 2 times the
running distance between the unit and the battery to cover 2 lengths of
Positive and Negative cable conductors).
40 | SAMLEX AMErICA INC.
Installation
SiZing of bAttery SiDe cAbleS AnD eXternAl bAttery SiDe fuSeS
90°c copper conductor. Size based on nec Ampacity at
nec
column (3) or 2%voltage Drop, whichever is thicker (See
Ampac-
ity = 125%
of rated
Dc input cable running Distance
current at between the unit and the
column 2
(See note (cable routing in free Air)
2)
up to 5 ft.
(column 3)
(column 5)
333A AWG#3/0
166A AWG #2
2 X AWG
466A
(MCM 300)
333A AWG#3/0
AWG #6
(2% voltage
63A
drop is
thicker)
note 3)
battery
up to 10 ft.
(column 6)
AWG #4/0
(This size,
based on 2%
voltage drop,
is thicker than
NEC based
size)
AWG #2
2 X AWG #3/0
#3/0
(MCM 300)
AWG #4/0
(2% voltage
drop is
thicker)
AWG #2
(2% voltage
drop is thicker)
cable running Distance
between the unit and the
battery
(cable routing in race-
way)
up to 5 ft. up to 10 ft.
(column 7) (column 8)
2 X AWG 2 X AWG
#4/0 #4/0
(MCM 350) (MCM 350)
AWG #1/0 AWG #1/0
Not recom- Not recom-
mended mended
2 X AWG 2 X AWG
#4/0 #4/0
(MCM 350) (MCM 350)
AWG #2
(2% voltage
AWG #6
drop is
thicker)
external
fuse based
on nec
Ampacity
at column
(3) (See
note 4)
(column 9)
350A
175A
500A
350A
70A