Installation – Outback Power Systems GS4048A Installation Manual User Manual
Page 25
Installation
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The terminals labeled
L1 and L2 GRID are used to connect to the two utility grid “hot” wires. The L1
and
L2 wires are usually black and red respectively, and read 120 Vac each when measured with
respect to neutral. In a standard service,
L1 and L2 are 180 degrees out of phase and should read 240
Vac when measured from one to the other.
The
L1 and L2 GEN terminals are used to connect to the “hot” wires on a 120/240 Vac generator.
Three neutral (
N) terminals are available. These terminals are electrically common. Any of them can
be used to connect to neutral wires from various parts of the system. The most common connections
are to the neutral bus on the main panel or utility grid service, the neutral bus on the output load
panel, the neutral bus in the GSLC, and the neutral wire from a generator.
The Radian can accept input voltages that range between (nominal) 100/200 Vac and 120/240 Vac
(split-phase only). The range of input acceptance may need to be adjusted to the nominal voltage of
the system so that inappropriate voltages are not accepted.
The AC source(s) can power both battery charger and loads if sized correctly. Use the source
amperage and the charger size to determine actual maximum draw. Size the input circuit breakers
according to these specifications.
The terminals labeled
OUT are used to connect the Radian inverter to the load circuits. These
terminals also transfer power from an input source if it is available. (See the next page.) Size the load
circuit breakers accordingly.
A Ground Terminal Bus Bar (TBB) is also available if multiple ground connections are needed (see
Figure 14 on page 19).
WARNING: Shock Hazard
During an error shutdown, the inverter’s output terminals are not live. However,
if the inverter recovers from a shutdown, the terminals will become live without
notice. Several error shutdowns can be recovered automatically, including
Low
Battery V, High Battery V, and Over Temperature. See the Troubleshooting
section and the list of error messages in the Radian Series Inverter/Charger
Operator’s Manual for more information.