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2-19
Cisco AC/DC Power System User Guide, R1.0
May 2006
Chapter 2 System Installation
2.4 Install Circuit Breakers
Figure 2-16 Circuit Breaker On/Off Positions
Step 2
Remove the 1 RU Distribution Shelf faceplate by loosening the two thumbscrews on the shelf faceplate
(Figure 2-17).
Figure 2-17 Removing the 1 RU Distribution Shelf Faceplate
Step 3 Locate the circuit breaker installation locations inside the 1 RU Distribution Shelf (positions A1, A2,
B1, and B2) (see Table 2-5 on page 2-20). Circuit breakers should be installed with the protective hood
(covering the ON position) on the left side of the shelf (Figure 2-16) to allow the 1 RU Distribution Shelf
faceplate to be correctly installed.
Step 4 Attach the circuit breaker alarm cables to the rear of the circuit breaker; the alarm cables are labeled C
(Common) and NC (Normally Closed) and are attached to the positions shown in Figure 2-16.
Common
On
Hood
Off
Not Used
Normally Closed
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