INSTRUCTION:
The neutral conductor from the inverter to point of interconnection
(POI) is optional. The function of the neutral, when used, is to
provide a point of reference for measurement purposes that is
essentially at ground potential. The neutral conductor is for control
or measurement purposes only, and therefore may be sized
according to NEC section 705.95(B). The ground conductor (PE) is
sized to section 250.122.
Use the OT type terminal (1-hole Compression Lug) to connect the AC
conductors to the AC terminal block and connect the PE (GND) cable to the
grounding terminal block. The neutral conductor is optional. The inverter
may be wired as a 3-wire or 4-wire connection, the PE ground is ALWAYS
required. When terminating the ground at the busbar a ferrule is
recommended but not required. (See the 1
st
diagram in Figure 3-29). Set up
the conductors referring to Figure 3-29.
Pre-insulated end ferrule
1pcs
OT type terminal,4pcs
Pre-insulated end ferruleCore wire
OT type terminalCore wire
Figure 3-29 AC output and internal ground conductor set up
When bonding the inverter/mount to a metallic structure is required, use the
OT type terminal (Compression Lug) to connect the ground conductor to
the external bonding point at the bottom of the wiring box. The bonding point
is located at the bottom of the wirebox as shown in Figure 3-30.
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