Grounding; Figure 11: Grounding Diagram - GE PACSystems RX3i User Manual

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Grounding

All CEP Carriers in a system must be grounded to minimize electrical shock hazard.

Failure to do so can result in severe personal injury.

Warning

The RX3i CEP Carrier and Expansion Carrier each provide two grounding connection contacts:

•

Grounding clips at the back of the carrier, which require DIN-rail installation

•

Grounding screw hole at the left-bottom of the carrier

Note:

When the Carrier is mounted on a DIN-rail, the grounding clips on the back of the Carrier

do not provide an adequate ground connection. The Carrier's metal back must also be

grounded using a separate conductor.

Ground each Carrier to the panel or enclosure using a minimum AWG #12 (3.3 mm2) wire with ring terminals.

Use an M3 screw, star lock washer and a flat washer to connect the wire at the Carrier's grounding hole.

Connect the other end of the ground wire to a tapped hole in the grounded mounting panel or enclosure, using

a machine screw, star lock washer and flat washer. Alternately, if the panel has a ground stud, use a nut and

star lock washer for each wire on the ground stud to ensure adequate grounding. Where connections are made

to a painted panel, the paint should be removed so clean, bare metal is exposed at the connection point.

Terminals and hardware used should be rated to work with the aluminum Carrier material.

Note:

The star lock washer method is suitable for a shield ground, but not suitable for a safety

ground.

GFK-2883E

March 2018

Chapter 3. Installation and Mounting

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