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
23
BATTERY CABLE CONNECTIONS
Cables must have crimped (or preferably, soldered and crimped) copper compression lugs unless
aluminum mechanical lugs are used. Soldered connections alone are not acceptable. We suggest using
high quality, UL-listed Trace Engineering battery cables. These cables are available in a specific
assortment of sizes from 1-½ to 10 feet, and in 2/0 or 4/0 AWG. They are color-coded and have pressure
crimped, sealed ring terminals. Contact your Trace Engineering dealer to order. Figure 13, illustrates the
proper method to connect the battery cables to the PS Series Inverter/Charger.
Figure 13, Battery to Inverter Cable Connection
INSTALLATION GUIDELINES - BATTERY CABLES
Warning! This inverter is not reverse polarity protected. If the positive terminal of the battery is
connected to the negative terminal of the inverter and vice versa, the result will be instantaneous failure of
nearly every power transistor. This type of damage is obvious and requires an extensive rebuilding of the
inverter at your own cost. It is not covered by the warranty.
Ensure that the inverter is off before connecting or disconnecting the battery cables and that all
AC power is disconnected from the inverter’s inputs.
Determine the correct size battery cable to use for your installation from Table 2, Minimum
Recommended Battery Cable Size Vs. Cable Length on page 21 and the proper size disconnect/fuse
from Table 3, Battery Cable to Maximum Breaker/Fuse on page 22. Color-code the cables with colored
tape or heat shrink tubing [the standard colors are red for positive (+) and black for negative (-)]. Always
double-check the polarity with a voltmeter before making the battery connections
Install the over-current device (fuse or circuit breaker) between the inverter and battery - as close as
possible to the battery - in the ungrounded conductor [typically the positive (red) cable]. Connect a cable
from the battery negative terminal to the negative (black) terminal on the inverter.
Observe Battery Polarity! Place the battery cable ring terminals over the stud and directly against the
inverter’s battery terminals. Red is positive (+), Black is negative (-). Use a 1/2-inch wrench or socket to
tighten the 5/16 SAE nut to 10-15 foot/pounds. Do not place anything between the cable ring terminal and
the flat metal part of the terminal or overheating of the terminal may occur. DO NOT APPLY ANY TYPE
OF ANTI-OXIDANT PASTE until after the battery cable wiring is tightened to 10–15 foot-pounds!
Note: Connecting the battery cables to the inverter battery terminals may cause a brief spark or arc -
usually accompanied by a "snapping" sound. This is normal - don't let it scare you. It is simply the internal
capacitors of the inverter being charged.
2/0 Copper Compression Lug 2/0 Aluminum Mechanical Lug
Do not place anything between
battery cable lug and terminal
surface. Assemble exactly as
shown.
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