Outback Power Systems GVFX Series Inverter/Charger Installation Manual - Manual (Page 74)

72
MULTIPLE AC SOURCES WITH THE FX INVERTER
When a system has the option of using either a generator or the utility grid as their AC input:
• Both the AC “Hot” and AC “Neutral” lines must be connected to the appropriate source.
• A connection can be made using a single-pole, double-throw switch (available from electrical
component suppliers) which has one connection each for AC hot wire.
• This switch must be rated to handle the system’s maximum AC voltage and AC current.
• The switch must isolate the two input sources from each other. When the switch is thrown, the AC
connection to one line must be broken before contacting the other connection. (A common term
for this type of switch is “break-before-make”.
• The neutral lines are common throughout the system. The same applies to the ground wires.
• The electrical system should have neutral and ground bonded together at a single point. This
is shown in the lower right corner of the drawing for convenience, but the bonding is usually
performed in the main electrical panel.
• If any other neutral-ground bonds are present in the system, particularly in the generator, they must
be removed.
GRID GEN
H N G
H N G
FX Inverter
H
N
G
H
N
G
Single-Pole
Double-Throw
Switch
L
O
A
D
S