Operation Manual

Chapter 3 Installing the Electrical Supply 23
AC Source Site Requirements
Note – As part of the installation, overcurrent devices meeting applicable national
and local electrical safety codes shall be provided.
The disconnect device for servicing is defined as any one of the following:
■ The appliance inlet on the rear of the system
■ The circuit breakers in the rack in which the system is mounted
■ The mains plug
It must be ensured that these remain accessible after installation.
Caution – External filtering and/or surge suppression devices may be required on
the power feeds where branch circuit electromagnetic characteristics are unknown.
Chassis Enclosure Grounding
■ One Thomas & Betts two-hole lug (part number: 54204-UB) suitable for 8AWG
conductor or UL/CSA approved equivalent having 5/8-inch pitch. Torque value:
3.5Nm maximum. Two M5 studs and cupwasher nuts are supplied on the rear of
the chassis for connection.
■ A Thomas & Betts crimping tool (part number: TBM 5-S), or approved equivalent
is required to secure the lug on to the cable.
■ An earthing bus bar that is near the equipment and easily accessible.
The safety earth path is established by the connection of the grounding conductor
within the AC power cord to a reliably earthed socket outlet located near the
equipment.
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