Nortel Networks 1000M PDU ground lug locations, AC column ground lug daisy chain connection

Installing AC power Page 83 of 456

Figure 28

PDU ground lug locations

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MAIN				+
CIRCUIT
BREAKER	ON	ON	ON	+
+	+	+	+	+
+		PDU

8D53CB

553-8993

Ground lugs

4Connect 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 29, 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 27 on page 81.

Figure 29

AC column ground lug daisy chain connection

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+				+
+				+
MAIN				+
CIRCUIT
BREAKER	ON	ON	ON	+
+	+	+	+	+
+		PDU

8D53CB

				+
+				+
+				+
MAIN				+
CIRCUIT
BREAKER	ON	ON	ON	+
+	+	+	+	+
+		PDU

8D53CB

From	To ground/protective	Terminate on
ground source	earth lug of next column	last column
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Communication Server 1000M and Meridian 1 Large System Installation and Commissioning