Table 2-2 Recommendced Battery Cable Size Versus Length - Xantrex SW Plus 2524 Owner's Manual

System Configuration
Battery cable lugs
Overcurrent
protection
Xantrex DC175 and
DC250
2–14
and inverter amperage per NEC/CEC guidelines. It is recommended that
the cable has battery acid resistant insulation and is rated for 90 °C
(32 °F) or better.
Be sure to check with any local regulatory agencies for additional
requirements.
Battery cables must have crimped copper compression lugs or crimped
and soldered copper compression lugs. Soldered connections alone are
not acceptable.
High quality battery cables are available from Xantrex in an assortment of
lengths from 1½ to 10 feet in #2/0 AWG and from 1½ to 15 feet in
#4/0 AWG sizes. These cables are color-coded with pressure crimped,
sealed ring terminals.
For safety and compliance with regulations, battery overcurrent
protection is required. Fuses and disconnects must be sized to protect the
wiring in the system and are required to open before the wire reaches its
maximum current carrying capability.

Table 2-2 Recommendced Battery Cable Size Versus Length

Maximum
Continuous
Inverter
a
Model DC amps
2524 134
2548 67
4024 214
4048 107
5548 147
a. "Maximum Continuous DC amps", as shown in this table, is based on low
battery voltage with an efficiency of 85%.
b. "NEC amps", as shown in this table, is based on low battery voltage, and
efficiency of 85%, and a 125% NEC derating.
The NEC/CEC requires both overcurrent protection and a disconnect
switch for residential and commercial electrical systems. These items are
not supplied as part of the inverter. However, Xantrex offers a DC circuit
breaker disconnect module specifically designed for use with Xantrex
NEC
Up to 5 Feet
b
amps One-way
167 #2/0 AWG
2
(67.4 mm )
84 #2/0 AWG
2
(67.4 mm )
267 #4/0 AWG
2
(107 mm )
134 #2/0 AWG
2
(67.4 mm )
184 #4/0 AWG
2
(107 mm )
Up to 10 Feet Up to 15 Feet
One-way One-way
#4/0 AWG Not
2 Recommended
(107 mm )
#4/0 AWG #4/0 AWG x 2
2
(107 mm ) (107 mm
#4/0 AWG x 2 Not
2 Recommended
(107 mm x 2)
#4/0 AWG Not
2 Recommended
(107 mm )
#4/0 AWG x 2 Not
2 Recommended
(107 mm x 2)
976-0043-01-02
2
x 2)