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Cisco ONS 15540 ESPx Hardware Installation Guide
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Chapter 2 Installing the Cisco ONS 15540 ESPx
Powering Up the Shelf
Warning
A readily accessible disconnect device must be incorporated in the building's
installation wiring.
Warning
This product relies on the building’s installation for short-circuit (overcurrent)
protection. Ensure that a Listed and Certified fuse or circuit breaker 25A,
minimum 60 VDC, is used on all current-carrying conductors.
If an external AC-input power supply is not used, proceed to the
DC-Input Power from the 15540-PWR-AC Power Supply” section on page 2-48
Rack-Mounting the 15540-PWR-AC External Power Shelf
The external power shelf is available in two models. This section describes the
installation of the 15540-PWR-AC external power shelf. See the
the 15540-ACPS-N-E External Power Shelf” section on page 2-51
model.
Note
Make sure you install the 15540-PWR-AC external power shelf close enough to
your chassis so that you can connect all power cords to the chassis and to the
power outlet. We recommend that you install the 15540-PWR-AC external power
shelf directly above your Cisco ONS 15540 chassis, leaving one half inch of space
between the chassis and the power shelf or in a directly adjacent rack. The
external power shelf is a 19-inch (483 mm) wide rack mount shelf, 3.5 inches (86
mm) high and 12 inches (305 mm) deep.