IPECS Release 5
Hardware Description & Installation
Issue 5.0
53
4.3.2 Main Cabinet Grounding
Before connection to AC power, the cabinet must be connected to a protective earth
ground in conformance with the appropriate IEEE recommendations. A protective
earth ground is required for user safety and to minimize EMC interference.
To ensure proper system operation and for safety purposes, a good protective earth ground is
required. A metallic COLD water pipe usually provides a reliable ground. Carefully check that the
pipe does not contain insulated joints that could isolate the ground path. If insulated joints exist,
another protective earth ground source must be used or, if codes allowed, the joints may be
bridged.
A 12 AWG UL type 1015 or larger copper wire is recommended as the protective earth ground
connection wire. However, check the appropriate national and local codes for proper conductor
type and size. The wire should be kept as short as possible; it is recommended that the wire be no
longer than 1 meter (about 3.3 feet).
The permanent protective earth ground “ “ must be connected to the backplane of the Cabinet
using #12 AWG or larger UL-1015 type copper wire. The protective earth ground terminal of the
cabinet is located on rear bottom left side of the cabinet as shown in Figure 4.3.2-1
.
•
The permanent protective earth ground “60417-1-IEC-5019” must be connected to the
backplane of the cabinet using #12 AWG or larger UL-1015 type copper wire. The
protective earth ground terminal of the cabinet is located on rear bottom left side of the
cabinet.
Loosen the ” “ terminal sufficiently to insert the Ground wire and re-tighten the terminal securely.
Figure 4.3.2-1 MCKTE Grounding
