Cisco Systems 159330, 124792, 124778 manual 2-19, 16 Circuit Breaker On/Off Positions, On Off

Chapter 2 System Installation

2.4 Install Circuit Breakers

Figure 2-16 Circuit Breaker On/Off Positions

Common

Not Used

Normally Closed

Hood

On

Off

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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

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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.

Cisco AC/DC Power System User Guide, R1.0

May 2006 2-19