Assembly and Installation
Chapter 3
39
Figure 3.6
Minimum Component Spacing Requirements (Separately Mounted Power
Supply)
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4"
(10.16cm)
6"
(15.24cm)
2"
(5.08cm)
4"
(10.16cm)
Wiring Duct
6"
(15.24cm)
2"
(5.08cm)
Area reserved for Disconnect, Constant Voltage
Transformer, Control Relays Motor Starters or
other User Devices.
4"
(10.16cm)
6"
(15.24cm)
10114I
PC Component Grounding
The recommended configuration for grounding Allen-Bradley Programmable
Controller components within an enclosure is illustrated in Figure 3.7. Bare
metal contact is required to ensure that good electrical contract has been
established between Controller components, the enclosure back panel, and the
enclosure. Paint or other non-conductive finishes must be scraped from the
back panel and Controller components where contact is made with the
component mounting bolts, nuts, or welded studs. An 8-gauge copper wire, or
larger, should be used to connect each component in the enclosure. Connections
should be made to the mounting bolts or studs on only one mounting bracket of
the component’s chassis (Figure 3.7).
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