INSTALLATION
Copyright Trace Engineering Company, Inc.
5916 - 195th Street N.E.
Arlington, WA 98223
Telephone: 360/435-8826
Fax: 360/435-2229
www.traceengineering.com
PS Series Inverter/Charger
Part No. 3597
Rev. D: November 23, 1999
Page
19
Before making any AC connections, make sure that the inverter is disconnected from the battery (or
battery bank). Feed the wires through conduit fittings located on the left side or left bottom side of the
inverter. (Note: Conduit fittings must be purchased separately and are required by code to comply with
residential and commercial installations).
The NEC requires that disconnect switches be provided in the AC input and output wiring circuits. AC
circuit breakers in an AC load center can be used to meet this requirement. The wiring both in and out of
the inverter must also be protected from short circuits and overloads by a fuse or circuit breaker. Consult
the NEC or your local code for more information and for other wire sizes. Table 1 on page 19 gives
suggestions for wire sizing.
Figure 11, AC Wire Connections
The three neutral terminals are common to each other and can be used in any combination or order. It is
often easier to only connect one AC neutral wire to the inverter and make the other neutral connections at
a central point such as in the AC load center, etc. The extra output neutral is used if installing the optional
Branch Breaker Kit. Consult your local code for more information and acceptable wire sizes and
configurations.
Use Table 1, below, to determine the proper size wire you require for your installation. These
recommendations may not meet all local code or the NEC requirements, consult your applicable electrical
code for more information regarding acceptable fuse and cable sizes.
Table 1, Recommended Minimum AC Wire Sizes To Breaker/Fuse Size at 75° C
INVERTER MODEL
FULL
PASS-THRU
CAPABILITY
MAXIMUM
FUSE/BREAKER
REQUIRED
CABLE SIZE
REQUIRED
IN CONDUIT
CABLE SIZE
REQUIRED
IN “FREE AIR”*
PS2512/PS2524 50 amps 60 amps # 6 AWG (THHN) # 8 AWG (THHN)
PS2212E/PS2524E 30 amps 30 amps # 10 AWG (THHN) # 12 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.
AC GROUND IN
AC HOT IN
AC NEUTRAL IN
AC GROUND OUT
AC HOT OUT
AC NEUTRAL OUT
ACCESSORY INPUT
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