23
2.0 INSTALLATION
©2000 Xantrex Technology Inc.
DC Circuit Grounding
Grounding is an important part of the system installation and must be performed correctly to
ensure safe operation of the equipment. Grounding requirements vary by country and application.
Consult the NEC for specific requirements.
The ground conductor should be sized appropriately for the over-current protection device
being used and according to NEC 250-95 (see table below for a portion of the NEC code).
Size of Over-current
Device Protecting the
Conductor
Minimum Size of
Copper Ground Wire
30 or 60 amp #10 AWG
100 amp #8 AWG
200 amp #6 AWG
300 amp #4 AWG
400 amp #3 AWG
3597-000-018
Table 3
Safety Ground Wire Size
General DC Grounding Requirements
Connect the negative (-) terminal of the battery bank to an appropriately sized conductor and
connect it to a solid earth ground, such as a grounding rod, driven 68 feet into the earth.
This procedure will properly ground the DC circuits.
Figure 19
DC Grounding
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