Cabinet Safety Ground Connections - Honeywell Experion LX 8 series Installation Instruction

4 BONDING AND GROUNDING

4.1 Cabinet safety ground connections

Adequate grounding is important for safety considerations and for reducing electromagnetic noise interference.
All earth-ground connections must be permanent and provide a continuous low impedance path to earth ground
for induced noise currents and fault currents. Refer to the following guidelines when considering the grounding
requirements of your system:
Grounding requirements
For safe operations of your equipment, a high-integrity grounding system must be installed as part of the
building's wiring system.
• An equipment ground wire must be enclosed with the circuit conductors (phase and neutral wires).
• The size of the ground conductor must be the same as, or larger, than the circuit conductors supplying the
equipment.
• The ground conductor must be securely bonded to the building-ground electrode.
• Grounding provisions must be in accordance with the NEC, CEC, and any other local codes.
• Ensure that the cabinet enclosure is connected to a protective earth ground using at least a #8 AWG solid
copper wire. There should be metal to metal contact between the grounding bus bar and the enclosure as
well as the channel. See the illustration below for more information:
The following illustration and callout table identifies typical safety ground connections in the cabinet. For
Honeywell assembled cabinets, all power and ground connections within the cabinet are made by Honeywell
manufacturing. The illustration is not to scale nor are component positions representative of actual mounting
locations within the cabinet. See illustration below for more information:
Callout
1
2
3
4
5
See illustration below for more information:
18 www.honeywell.com
Figure 1: Power and ground connections
Description
The AC safety ground bar is mounted to the cabinet frame.
To the cabinet front or rear AC safety ground bar if required.
To the cabinet complex front or rear AC safety ground bar as required.
To a supplementary ground connection, if required.
The local ground bar is mounted to the cabinet frame, if required