5 Electrical connection
24
2. If adjustment is necessary, choose the wire with
the correct voltage for your application and
tighten all wires on the right terminal block with
enough torque described in section “5.1 General
electrical connection procedure of NTX inverter”,
see page 20.
3. According to the below figure, set the correct
grid voltage mode.
GridMode: 240V
MPPT Input: 1
²
If the NTX is configured for the incorrect utility
voltage, the LCD will display error message.
Error: 01
Grid Volt Fault
If this error message is encountered, recheck the
output voltage configuration and confirm that it
is set property.
AC voltage configuration
The NTX may be easily configured for the different
grid types commonly found in the U.S. The NTX is
compatible with:
208 V AC output
240 V AC output
277 V AC output (only for NTX 6000)
Common utility voltage configurations
The figure illustrates commonly used utility types
and connecting mode with NTX inverter.
Grid Standard
L3
L1
L2
208
N
120
120
120
208
208
L1
L2
240
120
120
L3
L1
L2
480
N
277
277
277
480
480
208~ 3PH-∆
240~ SPLIT PHASE
277~ 3PH-Y
Terminal
3
2
1
3
2
1
3
2
1
Wire
N
L2
L1
N
L2
L1
–
L1
N
AWG#
10-12
10-12
10-12
