Appendix, Page 131 – Xantrex Technology 120 VAC/60 User Manual
Page 139
APPENDIX
2001 Xantrex Technology, Inc.
5916 - 195th Street N. E.
Arlington, WA 98223
Telephone: 360/435-8826
Fax: 360/435-2229
www.traceengineering.com
SW Series Inverter/Charger
Part No. 2031-5
Rev. C: February 2001
Page
131
Note: Sizes shown are for the conductor – do not include any insulation when determining your wire
size.
Figure 40, AWG Wire Size
Table 11, Minimum Recommended Battery Cable Size vs. Cable Length
INVERTER
MODEL
TYPICAL
DC
AMPS
1
NEC
AMPS
2
1 TO 3 FEET
ONE WAY
3 TO 5 FT
ONE WAY
5 TO 10 FT
ONE WAY
SW2512
267 Amps
334 Amps
#4/0 AWG/107 mm
2
#4/0 AWG/107 mm
2
Not Recommended
SW2612E
278 Amps
348 Amps
#4/0 AWG/107 mm
2
#4/0 AWG/107 mm
2
Not Recommended
SW3024E or J
160 Amps
201 Amps
#4/0 AWG/107 mm
2
#4/0 AWG/107 mm
2
#4/0 AWG/107 mm
2
SW4024 or W, K
214 Amps
267 Amps
#4/0 AWG/107 mm
2
#4/0 AWG/107 mm
2
#4/0 AWG/107 mm
2
SW3048E or J
80 Amps
100 Amps
#2/0 AWG/67.4 mm
2
#2/0 AWG/67.4 mm
2
#4/0 AWG/107 mm
2
SW4048 or K
107 Amps
134 Amps
#2/0 AWG/67.4 mm
2
#2/0 AWG/67.4 mm
2
#4/0 AWG/107 mm
2
SW4548E or A
120 Amps
150 Amps
#2/0 AWG/67.4 mm
2
#2/0 AWG/67.4 mm
2
#4/0 AWG/107 mm
2
SW5548
147 Amps
184 Amps
#4/0 AWG/107 mm
2
#4/0 AWG/107 mm
2
#4/0 AWG/107 mm
2
1
TYPICAL DC AMPS is based on Low Battery Voltage with an efficiency of 85%.
2
NEC AMPS is based on Low Battery Voltage, an efficiency of 85%, and a 125% NEC de-rating.
Table 12, Battery Cable to Maximum Breaker/Fuse Size
CABLE SIZE
REQUIRED
RATING IN
CONDUIT
MAXIMUM
BREAKER SIZE
RATING IN
“FREE AIR”
MAXIMUM
FUSE SIZE
#2 AWG
115 amps
125 amps*
170 amps
175 amps*
#2/0 (00) AWG
175 amps
175 amps
265 amps
300 amps*
#4/0 (0000) AWG
230 amps
250 amps*
360 amps
400 amps*
* The NEC allows rounding up to the next standard fuse size from the cable rating, i.e. 150-amp cable size
rounds up to a standard 175-amp size.
The term "free air" is defined by the NEC as cabling that is not enclosed in conduit or a raceway. Cables
enclosed in raceways or conduits have substantially lower continuous current carrying ability due to
heating factors.
3/0
.475
4/0
.530
250 MCM
.580
300 MCM
.635
350 MCM
.690
400 MCM
.730
500 MCM
.820
1
.335
1/0
.380
2/0
.420
12
.072
10
.115
8
.146
6
.184
4
.235
3
.281
2
.295
14
.073
SIZE
DIAMETE
R
SIZE
DIAMETE
R