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An Important Note about the DC Output Fuse: DC output wiring is protected by an
externally mounted ATC blade-type output fuse. The fuseholder is located on the bottom
of the unit. To remove the fuse for checking or replacing simply pinch the fuse between
thumb and forefinger and pull firmly downward.
The current limiting circuit of the Phase Three charger should prevent the fuse from
blowing under normal operating conditions. If the fuse blows, this may indicate a reverse
polarity hook-up or an internal short. If the battery is connected to the charger back-
wards, the fuse should blow to prevent a dangerous short circuit, however damage to the
internal components is possible, as well. If, after replacing this fuse, it blows again upon
application of power, return the charger to an electronics service professional or to the
factory for a thorough inspection.
Always replace the fuse with another of the same type and value. The values for the d.c.
output fuses are listed in the table below:
d.c. Output Fuse Table
Model
Fuse Value
PT-14
ATC 20 amp
PT-25
ATC 30 amp
PT-24-8
ATC 15 amp
PT-24-13
ATC 20 amp
E) Multiple Unit Parallel Wiring
If increased power or system redundancy is required, a second charger may be wired in
parallel. The unit is diode protected so it will not be damaged by feedback from the sec-
ond unit and current limiting will prevent overloading in the case of a failure of one of
the units.
Observe the following guidelines when wiring a parallel unit.
1) Use only another identical charger model. Do not use a different charger
model, either from NEWMAR or from another manufacturer.
2) Wire length and gauge and wire lug size must be identical for each charger to
ensure proper load sharing.
3) Wire gauge for each charger must be the same used as if a single charger were
wired into the system by itself.
F) a.c. Input Wiring
For the convenience of the installer an a.c. power cord has been factory installed. It is a
three-conductor stranded type, 16 AWG. The cord is terminated with a plug suitable for
standard USA outlets and uses standard USA color coding of conductors.
8
P.O. Box 1306
Newport Beach,
California 92663
www.newmarpower.com
Phone: 714-751-0488
Fax: 714-957-1621
E-Mail: sales@newmarpower.com
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