APPENDIX
Page
132
Copyright
Trace Engineering Company, 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. B: Sept 1, 1999
Table 13, Recommended Minimum AC Wire Sizes (75
°
C)
INVERTER
MODEL
FULL
PASS-THRU
CAPABILITY
FUSE/BREAKER
REQUIRED
CABLE SIZE
REQUIRED
IN CONDUIT
CABLE SIZE
REQUIRED
IN “FREE AIR”*
105-120 VAC
UNITS
60 amps
60 amps
# 6 AWG (THHN)
# 8 AWG (THHN)
220-240 VAC
UNITS
30 amps
30 amps
# 10 AWG (THHN)
# 10 AWG (THHN)
•
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.
Table 14, Knockout/Hole Size to Conduit Size Required
KNOCKOUT OR HOLE
DIAMETER
TRADE SIZE OF CONDUIT
INCHES
MM
INCHES
7/8 (.875)
22.2
½
1 3/32 (1.093)
27.8
¾
1 23/64 (1.359)
34.5
1
1 23/32 (1.719)
43.7
1 ¼
1 31/32 (1.968)
50.0
1 ½
2 15/32 (2.468)
62.7
2
3
76.2
2 ½
Table 15, Safety Ground Wire Size Table
The ground wire should be sized per NEC 250-95. The following table is derived from this portion of the
NEC code.
Battery DC Disconnect Size
Minimum Size of Copper
Ground Wire
30 Amp or 60 Amp
#10 AWG
100 Amp
#8 AWG
200 Amp
#6 AWG
300+ Amps
#2 AWG or greater
Summary of Contents for SW II - REV 4.01
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