AC Power and Grounding
From AC
Load Center
(2 separately
fused 15A
circuits)
Ground Wire
#14 AWG
4" Box (RACO
or equivalent)
HUBBELL
Receptacles
(5262 15A
or equivalent)
Single-Point
Ground
on a 4“ Box (Square
“D” PK9GTA or
approved equivalent)
Ground Bar Mounted
Approved
Building Ground
Figure 2-1. AC Grounding
#12 or #14 AWG Copper
Wire to Each Power Supply
Grounding Screw
Requirements
230
4“ Cover
(RACO 807
or equivalent)
Ground Wire
#6 AWG Copper
CAUTION:
The AC outlet for the control unit cannot be switch-controlled, Hugging
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. ”
Installing the Control Unit 2-7