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Configuring Your Ground and Neutral Connections 17
7.5 Preferred Grounding Configuration, Battery Systems
Figure 5 Preferred Battery Cabinet Grounding Configuration
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. Fig-
ure 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.
GROUNDING
ELECTRODE
PER NEC 250-24
TO OUTPUT
DISTRIBUTIO
N