PVI 23TL, 28TL Installation and Operation Manual (Rev J)
DOCR-070365-J
Page
30
of
66
6.0 AC Connections at the Inverter
Both PVI 23TL and PVI 28TL 3-phase AC wiring is recommended to be installed with five
conductors, one per phase along with a neutral and an AC equipment ground as per local
requirements.
WARNING:
The terminal is rated for CU and AL wire. Only Gen III AC terminal block
is rated for CU and AL wire. Verify that you have a Gen III inverter before
connecting AL wire.
The integrated disconnect switch terminals are listed for 75°C wire. See NEC 310.10 or the
Canadian Electrical Code regarding the temperature ratings of wire and terminals.
The conductor size shall not be smaller than the 75°C wire size based on the ampacities given
in Table 310.16 of the NEC, ANSI/NFPA 70, and an additional derating factor of 125% as
indicated by UL 1741. Temperature derating, voltage drop, and other considerations may
dictate that larger than minimum wire sizes be used. Verify that wire size choices meet local
codes and are properly sized to reduce voltage drop.
Inverter
Model
AC
Voltage
Number of
Conductors
Max. AC
Wire Size
Min. AC
Wire
Size
Torque
Max. AC
Output
Current
Recommended
Breaker Size
PVI 23TL
480V
3 (1 per phase)
plus neutral
1AWG
8AWG
30in-lbs
27.7A
*
35A
*
PVI 28TL
480V
3 (1 per phase)
plus neutral
1AWG
8AWG
30in-lbs
33.7A
*
45A
*
* Change is effective after S/N 1013011530001 and 1013021530001. For any prior S/N refer to
Rev.E of this manual available on Solectria’s website.
Table 6.1 – AC Customer Connections and Interconnection Information
The inverter includes an M5 stud for the connection of an AC Equipment Grounding Conductor
(EGC). The stud can accept a single copper conductor ranging from 8-10AWG. AC ECG shall be
sized per local code requirements. The AC EGC is connected to the stud via an M5 nut. A crimp
lug is available in the accessory box provided (torque = 14 in-lbs).
Figure 6.1 – AC Wire and Grounding Connections
