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EFX48-xx Series with RM3-340/440 Installation and Operation Guide
60
Copyright © 2019 Eaton Corporation. All Rights Reserved.
IPN March 2019
2
Attach the RM3-340/440 using four
rack mounting screws. Tighten the
screws.
 For 23" wide racks use the
optional 23" mounting brackets.
See Spare Parts on page 154.
Step 3 - Protective earthing conductor
The building installation shall provide a means for connection to protective earth, and
the RM3-340/440 is to be connected to that means:
1
A Service Person shall check whether or not the socket-outlets from which the
RM3-340/440 is to be powered provide a connection to the building protective
earth.

A check must be made with the local authorities or the customer
installation requirements as these may take precedence.

If this connection is provided then no further action is required. Proceed to
Step 4.
2
If not, the Service Person shall arrange for the installation of a Protective Earthing
Conductor from the separate protective earthing terminal to the protective earth
wire in the building:
•
Connect a Protective Earthing Conductor to the chassis of the RM3-340/440 as
shown in the following diagram. Use:
Wire: Multi-strand, copper conductor, 8 AWG / 8mm2 with
green/yellow insulation
Strip length: ½" (12mm)
Crimp lug: FCI-Burndy type YAV8C-L3 (for AWG cables), or suitable
alternative for metric sized cables.
Crimp tool: FCI-Burndy type MY29-11 (for AWG lugs), or generic
alternative
• Tighten terminal to 3.9 - 4.5Nm (35 - 39 inch-pounds).
• Terminate the Protective Earthing Conductor at a point connected to the
protective earth wire in the building.