E) A.c. Input Wiring - NewMar PT-24-45W Installation & Operation Manual

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When one or more of the available charger banks is not needed—
if, for instance, you have only two battery banks—it is not
necessary to jumper the output of that bank onto one of the others.
Nor will you get additional charging by running a second wire
from the extra bank to your load. The charger is able to deliver its
full rated output through a single bank, if necessary.
It is recommended that D.C. wiring from the charger to the
batteries be as direct as possible. Line voltage loss and electronic
noise interference of sensitive electronics are possible if the
charging leads are routed through a central electrical distribution
panel. Any elaborate wiring configurations are best left to a
qualified electrician.
CAUTION: ENSURE THAT LEADS ARE PROPERLY FUSED AT THE
BATTERY. (REFER TO ABYC RECOMMENDATIONS. SEE REFERENCE
APPENDIX AT THE END OF THIS MANUAL FOR ABYC CONTACT
INFORMATION.)
Ensure that your connections are tight and that correct polarity is
carefully observed at all times. The battery posts should be free of
any rust or corrosion.
CAUTION: SHORTING THE (+) AND (-) OUTPUTS (WHEN THE
CHARGER IS ON) OR REVERSE POLARITY BATTERY CONNECTION
(WHETHER OR NOT THE CHARGER IS ON) WILL CAUSE CHARGER
FAILURE. THE POSITIVE (+) TERMINAL MUST BE WIRED TO
6
P.O. Box 1306, Newport Beach, California 92663 • Phone: 714-751-0488 • Fax: 714-957-1621 • E-Mail: techservice@newmarpower.com
FIGURE 2: Wiring With Battery Switch
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THE POSITIVE POST OF THE BATTERY AND THE NEGATIVE
OR COMMON (-) TERMINAL TO THE NEGATIVE POST OF THE
BATTERY OR COMMON BUS. DOUBLE-CHECK D.C. WIRING BEFORE
ATTACHING TO CHARGER OUTPUT TERMINALS.
CAUTION: Do not attempt to increase battery bank capacity by
splitting the output of one of the banks with a diode-type battery
isolator. Undercharging may occur on that output bank, as a
result.
A note about the D.C. fuse: The internal wiring of the Phase Three
charger is protected against dangerous overheating in the event
of an internal short, or reverse polarity hook-up, by an internal
D.C. fuse. The fuse is not user replaceable. If this fuse blows the unit
must be returned to NEWMAR or a qualified electronic technician
for repair. (See the TROUBLESHOOTING section of this manual.)

E) A.C. Input Wiring

The PT-24-45W is designed to operate on 230V A.C., 50-60 Hz
input only. The PT-32-25W is designed to operate on 115 VAC, 50-
60 Hz input only. Ensure that the charger is compatible with the
available A.C. power.
This model is designed to be hard wired in to the ship's ac system.
16 AWG (1.5mm ) wire size is recommended. For A.C. wire runs
2
greater than 20 ft., use 14 AWG (2.5mm
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) wire size.
2
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