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Installation and Operation Manual (Rev B)
6. AC Connections at the Inverter
For the 3-phase AC wiring, for both PVI 14TL and PVI 20TL, five conductors are recommended,
one per phase along with a neutral and an AC equipment ground as per local requirements. 90°C
rated copper conductors must be used. The integrated disconnect switch terminals are listed for
75⁰C wire; see NEC 310.10 or Canadian Electrical Code regarding temperature ratings of wire and
terminals. 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
AC
Model
Voltage
PVI 14TL
208VAC
PVI 20TL
480VAC
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 to 10 AWG. 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: 10 in-lbs.
Typical
Minimum
Number of
AC Wire
AC
Size
Conductors
4 (1 per
10 AWG,
phase) plus
90°C Cu
neutral
4 (1 per
10 AWG,
phase) plus
90°C Cu
neutral
L1 L2 L3 N
Figure 6.1 AC Wire & Grounding connections
Maximum
AC Wire
Torque
Size
8 AWG,
10 In-lb
90°C Cu
8 AWG,
10 In-lb
90°C Cu
22
Maximum
Recommended
Continuous
Min.
Output
Interconnection
Current
Breaker/Fuse Size
39 A
50 A
27.3 A
35 A
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