20
Connect the AC input wires (optional for AC input)
Eaton 1250W / 1500W / 1800W Inverter Operation and Installation Guide
IM SP180164 / Rev D www.eaton.com
General AC wiring considerations
AC wiring connectors
AC wires are fixed to their respective barrier strip terminals by clamp screws. The amount of insulation to be stripped off the
individual wires should not be so much that it is visible outside the connector.
AC and DC Wiring Separation
Do not mix DC and AC wiring configurations. Do not use the same conduit or panel. If wires must cross, only do so at 90° to
one another. If necessary, examine applicable codes for specific AC and DC wiring proximity. Figure 7 is an illustration of the
AC wiring compartment.
AC wiring and GFCIs
AC input must be hardwired to the inverter. AC loads can either be plugged into the GFCI mounted to the front panel of the
inverter, or hardwired directly to the panel. An external GFCI should be used if output is hardwired since the integrated GFCI
does not control the AC Output hardwired connections. This section will explain how to hardwire the inverter with AC input
and output. All AC wiring (source to inverter, inverter to AC panels, AC panels to circuit breakers, and GFCIs) must be rated
to at least the current rating of the fuses and/or circuit breakers, and also must be insulated to at least 120Vac. Multi-strand
wire is required. Typically, 30A circuit breaker requires a 10AWG wire.
The knockouts for AC input and output hardwiring are located on the front sidewalls. Make sure to read the labels on the
inverter for proper input and output wiring.
AC input connections
1. Ensure AC and DC power are OFF.
2. Install required circuit breaker to the AC input wiring system.
3. Remove mounting screws holding the GFCI AC receptacle and take off the front panel.
4. Leave the GFCI inside the inverter, but remove the knockout from the sidewall.
5. Install the supplied NM clamp (Romex clamp) into the knockout hole.
6. Locate the terminal blocks. The whole area will be labeled “AC INPUT” and there will be three terminations:
•
(GND),
•
(L)
•
(N)
7. Strip enough of the input cable jacket as to expose the three wires, about 2 inches (50mm).
8. Strip approximately 3/8 inches (10mm) of insulation from each wire. The terminal blocks will accept wire sizes up to
10AWG.
Figure 7. AC wiring compartment
Status
Input Voltage (V)
Input Current (A)
Output power (KW)
Utility
Battery
Fuse
000
I N V E R T E R
12-110-1800-B4
SELECT