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PVI 23TL, 28TL Installation and Operation Manual (Rev J)
Figure 4.2 Removing the wiring box cover
4.2
DC/AC Grounding
PVI 23-28TL inverters have a DC ground bar with four terminals that can be used to terminate the
DC equipment ground, each terminal can accept a single copper conductor ranging from 6-
10AWG (Torque = 14in-lbs). As shown in Figure 4.3 on the next page.
DC equipment
ground
PVI 23-28TL inverters also have an AC ground bar with four terminals that can be used to
terminate the AC ground. Each terminal can accept a single copper conductor ranging from 6-
10AWG (Torque = 14 in-lbs), a stud that fits an M5 nut to terminate the AC system ground
(Torque = 14in-lbs), and an external ground point (Torque 14in-lbs). The stud and external ground
can accept a single copper conductor ranging from 8-10AWG.
DOCR-070365-J
Removing/Replacing the Wire Box Cover:
(1) Use a #3 Phillips screwdriver to remove the 4
screws on the wiring box and pull cover straight off
the box. Do not twist or slide the cover while
removing.
(2) To replace the cover use a #3 Phillips
screwdriver to replace the 4 screws on the cover.
INSTRUCTION:
Always use a hand tool (e.g. Screwdriver or T-
handle, #3 Phillips), never a power tool or any
other type of screwdriver. It is also important to
hold the cover in alignment with balanced force
across the cover, not weighted toward any edge.
Partially engage all four screws to the threaded
inserts a few rotations before tightening any one
screw. This is important to maintain alignment
and avoid thread damage. When all four screws
are engaged torque to 20 in-lbs (2.2Nm ).
Figure 4.3 DC Equipment Ground
AC equipment
ground
Page 22 of 66
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