Installation
IQ SERIES OWNERS MANUAL - 19 -
2.19 (19) 120 VOLT AC WIRING
CAUTION: BE SURE THE INVERTER IS TURNED OFF AND ALL EXTERNAL SOURCES OF
POWER ARE TURNED OFF BEFORE ACCESSING THE AC INPUT/OUTPUT WIRING.
General
AC input and output wires are to be routed through the three strain relief cable clamps located on the right
side of the unit.
The installer should verify that all AC circuits connected to the unit output are an insulated neutral type as
required by the National Electrical Code (NEC) article 551.
Refer to local codes for correct AC wire size appropriate for your inverter system and loads.
Ground Fault Circuit Interruption
Some installations require the installation of Ground Fault Circuit Interrupter (GFCI) type circuit breakers
in the AC distribution system. Because the output waveform of the inverter is not the same as that
supplied by a generator or the utility, some GFCI devices do not function properly. The following list of
GFCI circuit breakers have been tested and function properly with this inverter system.
Table 6 - Approved 15A Ground Fault Current Interrupters (GFCI Recommendations)
** Note: If GFCI trips and the inverter is in Load Demand mode the GFCI may not reset until you toggle
inverter off and back on then you will have 5 seconds to reset GFCI before unit goes back into Load
Demand mode again or you can disable Load Demand mode via dipswitch, if available.
IQ Models (Inverter only)
General AC1, AC2 and AC3 are all output circuits.
AC1 AC output circuit protected by 20 amp circuit breaker CB1.
AC2 AC output circuit protected by 15 amp circuit breaker CB2. (On inverter-only
models, the built-in GFCI receptacle receives its power from AC2.)
AC3 AC output circuit protected by 30 amp circuit breaker CB3.
IQC Models (Inverter/Charger)
AC1 This is the primary AC input circuit and is protected by 30 amp circuit breaker CB1. Input voltage
and frequency are monitored for proper tolerance at all times. Input power supplied to AC1 is
used for battery charging, and is used for pass-through to AC3 if power is NOT present on AC2.
Note: Be careful that the AC input power required for battery charging combined with the pass-
through power required for the AC loads does not overload the shore power AC source.
The battery charger will draw approximately 30 AC amps from shore power through AC1 when
the 12 volt charging output is 120 amps. AC input amps to DC output amps remains
approximately the same ratio. The charger will draw proportionally lower AC input amps from
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