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14 Installation Manual
Figure 7. Preferred Battery Cabinet Grounding Configuration
GROUNDING
ELECTRODE
PER NEC 250-24
TO OUTPUT
DISTRIBUTION
7.7. Preferred Grounding Configuration,
Battery Systems
Large, open-rack battery systems are normally
either locally grounded or left ungrounded,
depending on local code requirements.
Battery cabinet systems, on the other hand, should
be grounded to the UPS ground bus bar. Figure 7
above illustrates how a simple one-cabinet system
would be grounded. For systems with multiple
cabinets, the same configuration would apply.
However, for simplicity the installer can connect all
the battery cabinet grounds together and run a
single ground conductor (in the same conduit as
the phase conductors) to the UPS ground.
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