Figure 40, Awg Wire Size; Table 11, Minimum Recommended Battery Cable Size Vs. Cable Length; Table 12, Battery Cable To Maximum Breaker/Fuse Size - Trace Engineering SW II - REV 4.01 Owner's Manual

SIZE 14 12
DIAMETER .073 .072
SIZE 2/0 3/0
DIAMETER .420 .475
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

TYPICAL
INVERTER
DC
MODEL
AMPS
SW2512 267 Amps
SW2612E 278 Amps
SW3024E or J 160 Amps
SW4024 or W, K 214 Amps
SW3048E or J 80 Amps
SW4048 or K 107 Amps
SW4548E or A 120 Amps
SW5548 147 Amps
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.
CABLE SIZE
REQUIRED
#2 AWG
#2/0 (00) AWG
#4/0 (0000) AWG
* 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.
Copyright  Trace Engineering Company, Inc.
5916 - 195th Street N. E.
Arlington, WA 98223
10 8 6
.115 .146 .184
4/0 250 MCM
.530 .580
NEC 1 TO 3 FEET
2
AMPS ONE WAY
1
334 Amps #4/0 AWG/107 mm
348 Amps #4/0 AWG/107 mm
201 Amps #4/0 AWG/107 mm
267 Amps #4/0 AWG/107 mm
100 Amps #2/0 AWG/67.4 mm
134 Amps #2/0 AWG/67.4 mm
150 Amps #2/0 AWG/67.4 mm
184 Amps #4/0 AWG/107 mm

Table 12, Battery Cable to Maximum Breaker/Fuse Size

RATING IN MAXIMUM
CONDUIT BREAKER SIZE
115 amps 125 amps*
175 amps
230 amps 250 amps*
Telephone: 360/435-8826
Fax: 360/435-2229
www.traceengineering.com
4 3
.235 .281 .295
300 MCM 350 MCM
.635 .690
3 TO 5 FT
ONE WAY
2
#4/0 AWG/107 mm
2
#4/0 AWG/107 mm
2
#4/0 AWG/107 mm
2
#4/0 AWG/107 mm
2
#2/0 AWG/67.4 mm
2
#2/0 AWG/67.4 mm
2
#2/0 AWG/67.4 mm
2
#4/0 AWG/107 mm
RATING IN
"FREE AIR"
170 amps
175 amps 265 amps
360 amps
SW Series Inverter/Charger
APPENDIX
2 1 1/0
.335 .380
400 MCM 500 MCM
.730 .820
5 TO 10 FT
ONE WAY
2
Not Recommended
2
Not Recommended
2
#4/0 AWG/107 mm
2
#4/0 AWG/107 mm
2
#4/0 AWG/107 mm
2
#4/0 AWG/107 mm
2
#4/0 AWG/107 mm
2
#4/0 AWG/107 mm
MAXIMUM
FUSE SIZE
175 amps*
300 amps*
400 amps*
Page
Part No. 2031-5
131
Rev. B: Sept 1, 1999
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