AC Power and Grounding
2-8
Installation, SPM, Maintenance, and Troubleshooting Supplement
Figure 2-1. AC Grounding Requirements
CAUTION:
The AC outlet for the control unit cannot be switch-controlled. Plugging
the control unit into such an outlet invites accidental disconnection of the
system. The AC outlet must be properly wired as described in “AC Outlet
Tests”.
Ground Bar Mounted
on a 4" Box (Square
"D" PK9GTA or
approved equivalent)
From AC
Load Center
(2 separately
fused 15 A
circuits)
Ground Wire
#14 AWG
4" Box (RACO 230
or equivalent)
HUBBELL
Receptacles
(5262 15 A
or equivalent)
4" Cover
(RACO 807
or equivalent)
Approved
Building Ground
#12 or #14 AWG Copper
Wire to Each Carrier
Grounding Screw
Single-Point
Ground
Ground Wire
#6 AWG Copper
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