Installation Guide

Installation
22 900-0144-01-01 Rev B
AC Wiring
WARNING: Shock Hazard

Ensure there is no more than one AC neutral-ground bond at any time. Local
or national codes may require the bond at the main panel only.

The GSLC is equipped with its own bond, which may need to be removed.
IMPORTANT
:
The installer is responsible for providing overcurrent protection. The AC input and
output must be protected with branch-rated circuit breakers of up to 50 Aac
maximum size to meet local code requirements.
The Radian inverter/charger’s AC terminal block has six positions for AC wires. The minimum
recommended size is 10 mm
2
or #8 AWG (0.013 in
2
). Larger wire gauges may be required for specific
conditions. The largest size that can be used with the terminals is 16 mm
2
or #6 AWG (0.021 in
2
) wire.
The inverter makes its AC connections using spring-loaded clamps. It is necessary to strip
approximately 1.3 cm (½ inch) of insulation from the end of each wire. Other tools are not required.
Figure 17 AC Terminals
The terminals labeled
L
are used to connect to the “hot” or “line” wires. All system wiring must
comply with national and local codes and regulations.
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) 220 Vac, 230 Vac, or 240 Vac
(single-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 inverter to the load circuits. These terminals also
transfer power from an AC source if it is available. Size the load circuit breakers accordingly.
Generator In
(
Line and Neutral
)
AC Out
(Line and
Neutral)
Grid In (Line
and Neutral)