Installation
and
Operation
Manual
(Rev
A)
PVI
50
‐
100KW
Series
Inverters
DOCR
‐
070233
Page
16
of
92
4.2
AC
Grounding
Connections
AC
grounding
connection
locations,
connection
quantity,
conductor
range,
and
terminal
torque
requirements
are
shown
below.
Fig.
4.1a
AC
Ground
Connection
–
200A
(200A
Unfused
AC
Disconnect
Switch
Shown)
Fig.
4.1b
AC
Ground
Connection
–
400A
(400A
Unfused
AC
Disconnect
Switch
Shown)
AC
Disconnect
Switch
Type*
AC
Ground
Connection
Max
Number
of
Connections
Conductor
Range
Torque
200A
Ground
Bar
2
6
AWG
‐
1/0
AWG
40
in
‐
lbs
400A
Ground
Bar
2
4
AWG
‐
1/0
AWG
40
in
‐
lbs
Ground
Lug
1
2
AWG–
250
kcmil
275
in
‐
lbs
*See
Tables
4.3
&
4.4
to
determine
the
AC
disconnect
switch
type
by
inverter
model.
Table
4.1
–
AC
Ground
Conductor
Sizes
&
Torques
AC
Ground
Bar
AC
Ground
Bar
AC
Ground
Lug
(400A
AC
Disco
Only)