Sun Microsystems Sun Fire V1280, Installation Manual

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1-34 Sun Fire V1280/Netra 1280 Systems Installation Guide • May 2006
1.6.2 Connecting the Netra 1280 Power Cables
Note –
The following procedure is intended as a guide only and should only be
performed by a qualified electrician.
1. Connect the earthground cable to a suitable ground point.
2. Connect the remaining power cables to the customer-supplied circuit breakers.
DC0 and DC1 are connected to one power source, and DC2 and DC3 to the other
(
FIGURE 1-25
).
FIGURE 1-25
Netra 1280 Power Feed Connectors
1.6.3 Verifying the Power Input Connections Prior to
the Initial Power Application
Note –
The following procedure is intended as a guide only and should only be
performed by a qualified electrician.
Caution – Ensure the cabling is correct prior to switching system power on for the
first time. Incorrect cabling could cause injury to personnel or damage to equipment.
1. Verify the ground input wires (green) connect to system ground.
Source B
Source A
+
+
-
-
+
+
-
-
Earth ground
DC3 (B +)
DC2 (B +)
DC1 (A +)
DC0 (A +)
DC3 (B -)
DC2 (B -)
DC1 (A -)
DC0 (A -)
Circuit breaker
Circuit breaker
Circuit breaker
Circuit breaker
White (neutral/return)
White (neutral/return)
White (neutral/return)
White (neutral/return)
Black (hot/input)
Black (hot/input)
Black (hot/input)
Black (hot/input)
Netra 1280