Ac Safety Grounding - Helios RM-PSW2KVA Series User Manual

2-5 AC Safety Grounding:

During the AC wiring installation, AC input and output ground wires are connected to
the inverter. The AC input ground wire must connect to the incoming ground from
your AC utility source.
The AC output ground wire should go to the grounding point for your loads (for
example, a distribution panel of bus chassis).
2-5-1 Neutral Grounding (GFCI's):
2-5-1-1 120V models: The neutral conductor of the AC output circuit of the
RM-PSW2KVA/E Inverter is automatically connected to the safety
ground during inverter operation. This conforms to national electrical
code requirements that separately derived AC sources (such as inverter
and generators) have their neutral conductors tied to ground in the
same way that the neutral conductor from the utility is tied to ground at
the GFCI breaker panel. For models configured with a transfer relay,
while AC utility power is presenting and the YK-PSW2KVA/E Inverter is
in bypass mode, this connection (neutral of the YK-PSW2KVA/E
Inverter's AC output to input safety ground) is not present so that the
utility neutral is only connected to ground at your breaker panel, as
required.
2-5-1-2 230V models: There is no connection made inside the YK-PSW2KVA/E
Inverter from either the line or neutral conductor to the safety ground.
Ground Fault Circuit Interrupters (GFCI'S):
Installations in Recreational Vehicles (for North American approvals) will require
GFCI protection of all branch circuit connected to the AC output of the hardwire
terminal equipped inverter. In addition, electrical codes require GFCI protection of
certain receptacles in residential installations. While the pure sine wave output of
the inverter is equivalent to the waveform provided by utilities, compliance with UL
standards requires us to test and recommend specific GFCI. Our company has
tested the following GFCI-protected 20A receptacles and found that they
functioned properly when connected to the output of the inverter.
WARNING!
Do not operate the power inverter without connecting it to
Ground.
Electrical shock hazard may result.
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