Electrical Grounding Requirements - Cisco 3310 Mobility Services Engine Getting Started Manual

Chapter 2 Preparing for Installation
Choosing a Physical Location for the Mobility Services Engine

Electrical Grounding Requirements

The mobility services engine must be grounded properly for proper operation and safety. In the United
States, you must install the equipment in accordance with NFPA 70, 1999 Edition (National Electric
Code), Article 250, as well as any local and regional building codes. In Canada, you must install the
equipment in accordance with Canadian Standards Association, CSA C22.1, Canadian Electrical Code.
In all other countries, you must install the equipment in accordance with any regional or national
electrical wiring codes, such as the International Electrotechnical Commission (IEC) Code 364, parts 1
through 7.
Furthermore, you must verify that all power distribution devices used in the installation, such as branch
wiring and receptacles, are listed or certified grounding-type devices. Because of the high
ground-leakage currents associated with multiple systems connected to the same power source, Cisco
recommends the use of a PDU that is either permanently wired to the building's branch circuit or
includes a nondetachable cord that is wired to an industrial-style plug. NEMA locking-style plugs or
those complying with IEC 60309 are considered suitable for this purpose. Using common power outlet
strips for the mobility services engine is not recommended.
Cisco 3310 Mobility Services Engine Getting Started Guide
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