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Figure 31
PDU ground lug locations
4
Connect the safety ground/protective earth wire (insulated ground wire
must be used for system grounding).
a.
For a single-column system, connect a #6 AWG wire from the
ground source in the service panel to a ground lug on the pedestal.
b.
For a multiple-column system, connect a #6 AWG wire from the
ground source in the service panel to a ground lug on the closest
column. Daisy-chain #6 AWG ground wires from one pedestal to the
next as illustrated in Figure 32, connecting all of the columns
together. You can also run a #6 AWG wire from the ground source to
each column individually. If the columns are not bolted together,
physically separated groups of columns should be grounded
individually as shown in Figure 30 on
Figure 32
AC column ground lug daisy chain connection
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MAIN
CIRCUIT
BREAKER
ON
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From
ground source
Installing AC power
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MAIN
CIRCUIT
BREAKER
ON
ON
ON
+
+
+
+
+
+
PDU
8D53CB
Ground lugs
+
+
+
+
+
ON
ON
+
+
+
PDU
8D53CB
To ground/protective
earth lug of next column
Large System Installation and Commissioning
+
+
+
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553-8993
page
89.
+
+
+
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MAIN
CIRCUIT
BREAKER
ON
ON
ON
+
+
+
+
+
+
PDU
8D53CB
Terminate on
last column
Page 91 of 436
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553-8992
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