Magnum Energy CSW1012 - Manual (Page 12)

8 © 2013 Magnum Energy, Inc.
2.0 Installation
2.3 Wiring the Inverter – General Requirements
This section describes the requirements and recommendations for wiring the
CSW1012 inverter. Before wiring the inverter, carefully read all instructions.
WARNING: Wiring should meet all local codes/standards and be
performed by qualifi ed personnel (i.e., licensed electrician).
2.3.1 Wiring Requirements
• All conductors that are at risk for physical damage must be protected
by tape or placed in a raceway.
• Always check for existing electrical, plumbing, or other areas of
potential damage prior to making cuts in structural surfaces or walls.
• Where DC wiring must cross AC or vice-versa, try to make the wires at
the crossing point perpendicular (90 degrees) to one another.
• DC overcurrent protection must be provided as part of the installation.
• Use only copper wires with a minimum temperature rating of 75°C.
2.3.2 Torque Requirements
Torque all DC cable connections from 79 to 96 lbf-in (8.9 to 10.9 N-m).
2.4 DC Wiring
This section describes the inverter’s required DC wire sizes, the recommended
disconnect/overcurrent protection, and how to make the DC connections to
the inverter and the battery bank.
WARNING: Even though DC voltage is “low voltage”, signifi cant
hazards may be present, particularly from short circuits of the bat-
tery system.
CAUTION: The inverter is NOT reverse polarity protected—which
means that if the negative and positive battery voltage is connected
backwards to the inverter, the inverter will likely be damaged. You
should verify the correct voltage polarity using a voltmeter BEFORE
connecting the DC wires.
CAUTION: Before wiring the DC cables, review the safety informa-
tion at the beginning of this manual and the information below to
ensure a safe and long-lived system.
CAUTION: DO NOT connect the battery cables to the inverter until
all wiring is complete and the correct DC voltage and polarity have
been verifi ed.
Refer to Figure 2-4 when connecting the DC wires to the battery, and to
Figure 2-5 when connecting to the inverter. Also, consider the following
requirements to ensure maximum performance:
•
The DC positive and negative cables connected to the inverter from the
battery bank should be tied together with wire ties/straps or electrical
tape approximately every 6 inches (15.3 cm). This helps improve the
surge capability and reduces the effects of inductance, which improves
the inverter waveform and reduces the wear of the inverter’s fi lter
capacitors. Keeping the battery cables close together also reduces the
chance of radio frequency interference.