Alpha Technologies Cordex CXPS-M 48_24-1200_600A - Manual (Page 43)

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9400004-J0 Rev B
6.3.2 Connecting the power plant frame ground
The power plant frame must also be connected to the MGB or FGB—see Figure 23. This is done for personnel
safety and to meet many telco-grounding requirements. Cable should be #6 AWG (16mm) for small to medium
size power plants and #2/0 for large plants (> 800A).
Frame ground
¼" on 5/8" centers
Figure 24 —
Frame reference ground (top of bay)
Table G — Typical Ground Reference Conductor Selection
System Ampacity Typical ground reference conductor size
< 30A #10
30-100A #6-2
100-400A 0000
400-800A 350 MCM
> 800A 750 MCM