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4) Cut away the outer jacket of the new three-wire A.C. input cable
so that individual wire leads are about 2" long. Strip about ¼" of
insulation off the ends of each wire and feed the cord through the
input cable strain relief.
5) Insert each A.C. input wire into the appropriate L1, L2/N or
EARTH GROUND terminal and tighten securely.
6) Tighten the compression nut on the input cable strain relief.
Replace the A.C. input wiring access plate and tighten the two
screws.
(In marine applications) All charger wiring should be installed in
accordance with UL, U.S. Coast Guard and/or A.B.Y.C. regulations
and recommendations, as well as all relevant local codes. See
section VIII) REFERENCE APPENDIX for sources.
A note about the A.C. input fuse: The A.C. input of your charger
is protected by an input fuse which is located inside the unit.
Due to the current limiting characteristic of the charger, it is
highly unlikely that this fuse will blow unless there is some other
malfunction within the charger. This fuse is not user-replaceable.
Replacement of the input fuse must be performed by a qualified
service person. (See TROUBLESHOOTING section for further
information.)
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Bank 1
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P.O. Box 1306, Newport Beach, California 92663 • Phone: 714-751-0488 • Fax: 714-957-1621 • E-Mail: techservice@newmarpower.com
FIGURE 4: Parallel Wiring for Increased Charging Current
Parallel Wiring For Large Capacity Battery Systems
PT-24-45W
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F) Multiple Unit Parallel Wiring
Multiple Phase Three chargers may be wired in parallel, if
necessary. They are diode protected against feedback from other
units and current limiting will prevent overloading, see figure 4.
Two reasons for paralleling chargers are:
1) To increase charging current of an existing system
2) Redundancy (in the event one charger fails, system can be
powered by redundant charger)
Parallel wiring recommendations:
1) Use the same wire size on both chargers and wire both chargers
directly to the battery posts. If practical, use the same wire length
on output of each charger. This will help the chargers to share
current when they are both in the same charging stage.
2) If temperature compensation option is used, a separate sensor
must be provided for each charger (see section III-H Temperature
Compensation Option) and the sensor ends connected to the same
batteries.
3) Make sure both chargers are set for the same battery type (see
section III-G, Gel-Cell/Lead Acid Selector.
Note: Under certain line and load conditions, it is normal for
paralleled chargers to output different amounts of current. It is
also normal when ac power is connected or interrupted to see the
chargers in different charge modes (Float, Absorption or Bulk.)
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Bank 2
To Loads
www.newmarpower.com
Note: This
diagram does
not illustrate
PT-24-45W
a complete
system. Refer
to ABYC
standards E-11
AC & DC
electrical
systems on
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boats.
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Bank 3
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