Dometic SI 1500, User Manual

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10
3.5 Making DC Wiring Connections
Follow this procedure to connect the battery cables to the DC input
terminals on the Dometic SI 1500 Sine Inverter. Your cables should be
as short as possible (less than 10 feet / 3 meters) and dimensioned to
handle the required current in accordance with the electrical codes or
regulations applicable to your installation. See table 1 for cable
dimensions.
Cables that are not an adequate gauge (too narrow) or are too long will
cause decreased inverter performance such as poor surge capability
and frequent low input voltage warnings and shutdowns.
These low input voltage warnings are due to DC voltage drop across the
cables from the inverter to the batteries. The longer and narrower these
cables, the greater the voltage drop.
Increasing your DC cable size will improve performance. The producer
recommends the following cables for optimum inverter performance,
see table 1 and drawing:
Model No Wire Inline Fuse
SI 1500-12V 35mm
2
, AWG2 200A
SI 1500-24V 22 mm², AWG4 130A
Also, use only high quality copper wiring and keep cable length short,
we recommend less than 3 meters / 10 feet.