Installation Manual and Specifications

Installation

900-0123-01-01 Rev A

Bypass Assembly

Bypass switching can be used when the inverter is shut down for maintenance. This topic is

discussed more beginning on page 47. The GSLC can be equipped with the GS-IOB-

120/240VAC bypass assembly. The instructions on this page are for making external

connections to the bypass assembly after installation. (The installation wiring for the GS-IOB-

120/240VAC is described on page 45.)

If no bypass assembly is used, connections should be made directly to each TBB from the

circuit breakers for the inverter, AC sources, and loads. These connections are designated in

Figure 33.

Wiring diagrams for an assembled 120/240 Vac system are shown beginning on page 49.

Figure 34 Inverter AC Connections (split-phase)

To make the connections to the Radian inverter:

1. Designate the top AC circuit breaker as the

inverter AC output disconnect. Install a wire from

the black AC output TBB (as shown in Figure 33)

to the disconnect marked by 1.

2. Install a wire from the red AC output TBB to the

disconnect marked by 2.

3. Install wires on the left side of the disconnect as

marked by 3 and 4. Connect these wires to the

appropriate L1 and L2 output terminals on

the Radian inverter.

4. Designate the third AC circuit breaker from the

top as the disconnect for one AC source (G

RID

or G

EN). Install a wire from the black source

circuit TBB (as shown in Figure 33) to the

disconnect marked by 5.

5. Install a wire from the red source circuit TBB to

the disconnect marked by 6.

6. Install wires on the right side of the disconnect

as marked by 7 and 8. Connect these wires to

the appropriate L1 and L2 input terminals on

the Radian inverter (the terminals labeled either

RID or GEN).

7. If a second AC source is present, repeat steps 4

through 6 using the bottom circuit breaker.

8. Install a wire on the inverter’s NEU terminal

and connect it to the GSLC’s neutral TBB

(as shown in Figure 33). Only one neutral

connection is required.

GRID and GEN inputs AC Output

Disconnects