GSLC175-PV1-120/240 Installation

Wiring

900-0123-01-00 Rev C 39

Single-Phase Wiring

The GSLC allows multiple terminal bus bars (TBB) for multiple AC connections. Because the Radian

inverter possesses two sets of AC input connections and one set of output connections, three terminal

bus bars are available for hot connections, as well as one neutral bus bar. The hot bus bars use brown

insulators in 230 Vac models. The neutral bus bar uses blue insulators in 230 vac models.

The TBB on the left is generally used for the inverter’s AC output connections. The central TBB is for

utility grid connections and the right TBB is for a generator. The preassembled GSLC models follow

this convention.

Each TBB accepts conductors from 70 mm

(1/0 AWG) to 2.5 mm

(#14 AWG). See Table 2 on page 29

for required torque values.

If steps are inappropriate for a given system (such as instructions for a generator when none is

present), they can be ignored.

Figure 35 AC Terminal Bus Bars (single-phase)

AC Output

Grid

Generator

Neutral

To make external AC connections to the

single-phase GSLC:

1. Connect the hot wire from the AC load

panel to brown TBB 1 (AC Output).

2. Connect the neutral wire from the AC

load panel to neutral TBB

3. Connect the hot wire from the utility grid

panel (if present) to brown TBB 3 (Grid).

4. Connect the neutral wire from the utility

grid panel (if present) to neutral TBB 2.

5. Connect the hot wire from the generator

(if present) to brown TBB 4 (Generator).

6. Connect the neutral wire from the

generator (if present) to neutral TBB 2.

NOTE: Remove the neutral-ground bond

if necessary. See page 30.

The neutral insulator in Figure 35 is in the

position which opens the bond.