Connecting the AC Power Cable to the Router
Before You Begin
When connecting the router to AC power, you must ensure that the following conditions are met:
•
AC power can be readily and conveniently removed from the router. The power should not be removed
by disconnecting the AC power connector on the unit. It should be removed by disabling AC power at
the power circuit.
The plug-socket combination must be accessible at all times, because it serves as the main disconnecting
device. Statement 1019
Warning
This product requires surge protection to be provided as part of the installation. To comply with the
Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety, an external surge
protective device (SPD) is required at the AC power service equipment.
Note
Before connecting or disconnecting the power cord, you must remove the AC power from the power cord
using a suitable service disconnect.
Caution
•
You must protect AC power plugs and AC receptacles from water and other outdoor elements. You can
use a UL-listed waterproofing enclosure suitable for covering the AC receptacle and AC power plug
that supplies power to the unit, as described in Article 406 of the National Electric Code (NEC).
•
When you install the unit outdoors, or in a wet or damp location, the AC branch circuit that powers the
unit should have ground fault protection (GFCI), as required by Article 210 of the NEC.
•
If the power cord goes through a metal cover, a bushing should be installed to prevent fraying of the
cord. When using a strain relief bushing, you should follow these recommendations:
◦
Use properly sized parts
◦
Use bushings that are safety certified
◦
Use parts that are suitable for outdoor installation
To meet EN/IEC60950-22 (Clause 4.2) requirements, ensure that additional protection is provided external
to this equipment to reduce transient surges from Overvoltage IV to Overvoltage Category II at the AC
power input of the router. The overvoltage and fault-current protection components used to achieve this
protection must comply with the IEC 61643 series of standards. To meet CAN/CSA-C22.2 No.
60950-22-07/UL60950-22 requirements, use alternative components to provide this additional protection.
Those components may comply with ANSI/IEEE C62.11, CSA Certification Notice No. 516, CSA C22.2
No. 1, or UL 1449. Suitability of the components for the application must be determined for the intended
installation. (For example, some devices are suitable for installation on the load side of the service entrance
only, and some are suitable for use with cord-connected equipment only.)
Note
Cisco ASR 901S Series Aggregation Services Router Hardware Installation Guide
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OL-29732-01
Installing the Router
Connecting the AC Power Cable to the Router