16
CombiMaster 120V Series – User and Installation Manual
4.5.2 AC wiring
WARNING
!
The ground wire offers protection only if the case of the CombiMaster Inverter/Charger is
connected to the safety ground. Connect the ground terminal (PE / GND) to the hull or the
chassis of the boat or vehicle that this CombiMaster Inverter/Charger is equipped on.
WARNING
!
For safety reasons Ground Fault Circuit Interrupters (GFCIs), also known as Residual
Current Devices (RCDs), must be integrated in the AC input
and
AC output of the
CombiMaster Inverter/Charger. Always comply with all local rules and regulations.
CAUTION!
For the isolation transformer that is used at the AC input, choose a transformer with at least
2x the total inverter power of the units. Too small a transformer causes unstable behavior!
For a safe installation the correct wire cross section must be applied. Don’t use a cross section that is
smaller than indicated. When cables are longer than 10 feet [3m], the size should be increased (one
size over) to compensate for cable losses. Maximum AC breaker size:
Model 12/1500-60, 12/2000-100, 12/3000-160,
24/2000-60, 24/3000-70
12/3500-200, 24/3500-100,
24/4500-120, 48/5000-70
AC input circuit breaker
30A* (12 AWG [4mm
2
] wire)
50A* (8 AWG [10 mm
2
] wire)
AC output circuit breaker 40A (10 AWG [6 mm
2
] wire)
85A (6 AWG [16 mm
2
] wire)
* or less when the AC supply is rated for lower value
Recommended wire colors 120V
AC
single-phase (refer to local rules):
Color Meaning
Must be connected to
Black Hot or Line L
White Neutral
N
Green Ground
