Planning the Site and Installation
Preparing for Installation
3-5
Each power connection must be able to supply a minimum 50 amperes. DC power connections require
copper wire of a size suitable for the installation in accordance with the National Electrical Code (in the
United States) or applicable local jurisdiction (outside the United States) installation requirements. An
external fuse panel, either a stand-alone unit or incorporated in a DC power supply system, or a circuit
breaker panel, is required for power on and power off control.
Environmental Requirements
The installation area for the SmartEdge 1200 hardware must allow the following clearances:
• A minimum of 6.0 inches (15.2 cm) at the back of the chassis (for cable routing)
• A minimum of 20.0 inches (50.8 cm) at the front of the chassis (for maintenance)
Table 3-7 lists the environmental requirements for the installation site of the SmartEdge 1200 hardware.
Table 3-6
Nonoperable Power Conditions
Slot Power Condition
Power Zone Condition
Currently Available Power
Slots 1 to 7 have no power.
Slots 8 to 14 have redundant power.
No power for zone 1
Redundant power for zone 2
A2, B2
A1 and B1 are not connected
or have failed.
Slots 1 to 7 have no power.
Slots 8 to 14 have nonredundant power.
No power for zone 1
Nonredundant power for zone 2
A2 or B2
A1 and B1 are not connected
or have failed.
Slots 1 to 7 have redundant power.
Slots 8 to 14 have no power.
Redundant power for zone 1
No power for zone 2
A1, B1
A2 and B2 are not connected
or have failed.
Slots 1 to 7 have nonredundant power.
Slots 8 to 14 have no power.
Nonredundant power for zone 1
No power for zone 2
A1 or B1
A2 and B2 are not connected
or have failed.
Caution
Risk of equipment damage. A DC-powered system uses –48 VDC power, is powered from a
fuse panel, and can be damaged by overloaded circuits. To reduce the risk, ensure that the
fuses in the external fuse panel are suitably rated for the installation in accordance with the
National Electrical Code (in the United States) or applicable local jurisdiction (outside the
United States) installation requirements.
Caution
Risk of equipment damage. A SmartEdge router can be damaged by lack of proper cooling
and ventilation. To reduce the risk, never install the chassis in an unventilated area, and always
ensure that cooling equipment sufficient to maintain a temperature of less than 104°F (40°C)
is available.
Table 3-7
Environmental Requirements
Specification
Value
Cooling
Forced air (fan cooled)
Operating temperature, short term
1
23° to 131°F (–5° to 55°C)
Operating temperature, long term
2
41° to 104°F (5° to 40°C)
Operating humidity
5 to 95% (noncondensing)
