D) D.c. Output Wiring - NewMar PT-24-45W Bb8Db2Cc8C9B8A4Bb2Bbe763F

*To comply with ABYC D.C. chassis grounding conductor (ABYC
A-20), connect a suitable sized wire to the ¼"-20 chassis grounding
stud near AC cable feed thru.
Make a mark on the wall or bulkhead where each of the keyhole
slots will be located. Then drive a screw about halfway in at each
of these marks. Hang the charger onto the bulkhead using the
keyhole slots. Doing this will save you from having to support the
charger's weight while you are driving in the four permanent
mounting screws. Note: The keyhole slots may be used for
additional support screws but they are not to be used as permanent
mounting points, by themselves.
IMPORTANT: Although the charger is constructed of materials and
in a manner which makes it highly resistive to the corrosive effects
of moisture in the environment, the charger is not water-resistant.
Do not mount the charger where there is a possibility of water
entering the unit. Evidence of water entry into the charger will void
the warranty.

D) D.C. Output Wiring

Note: Only qualified service personnel should access the output
terminals of the charger.
Phase Three
Battery Charger
AC Input
*
* Per ABYC A-20: A d.c. chassis grounding
conductor shall be connected from the case
of the battery charger to the engine negative
terminal or its bus, and must not be more than
one size under that required for the d.c. current
carrying conductor and not less than 16 AWG.
P.O. Box 1306, Newport Beach, California 92663 • Phone: 714-751-0488 • Fax: 714-957-1621 • E-Mail: techservice@newmarpower.com
FIGURE 1: Simple D.C. Wiring (Preferred Method)
–
+ + +
C
B B B
O
A A A
M
T T T
M
T T T
O
1 2 3 N
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Procedure
1. Remove the charger's front cover by loosening the four slotted
mounting screws. These screws are captured, do not remove them.
2. Pull the cover straight off the chassis.
3. For a secure installation D.C. output wires must be attached with
¼" ring terminals. Refer to D.C. Wire Size Table below for correct
wire size based on model and length of wire run.
4. See figure 1 & 2 for D.C. connection schemes
5. Once wiring is completed, install plastic terminal block cover
and the charger's front cover. Note: Do not over-tighten the cover
mounting screws. They should be snug (approx. 2 turns.)
D.C. Wire Size Table*:
Model
10'
PT-24-45W #6 (16mm)
PT-24-60W #6 (16mm)
PT-24-95W #2 (35mm)
PT-32-25W #10 (6mm)
PT-32-70W #6 (16mm)
*Based on N.E.C. Minimum Wire Size Chart and ABYC 3% Voltage
Drop Chart
Typical D.C. wiring configurations are illustrated in FIGURES 1 and
2 below.
The charger is able to deliver its full rated output through a single
+
T
P
House/Engine
Bank 1
-
+
House Bank 2
-
+
Gen Bank
-
IMPORTANT: Install fuses at batteries per ABYC recommendations.
Distance from Batteries (in feet)
15'
Wire Gauge AWG (mm)
#6 (16mm) #4 (25mm)
#4 (25mm) #4 (25mm)
#2 (35mm) #2 (35 mm)
#8 (10mm) #8 (10mm)
#4 (25mm) #4 (25mm)
Optional Temperature Probe
See page 10 for installation
information. Use provided cable
clamps to secure probe cable
Note: This diagram does not
illustrate a complete system. Refer
to ABYC standards E-11) AC & DC
electrical system on boats
20'
5