Samlex America S1500 - Manual (Page 16)

3-6. 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 ground bus ).
Ground Fault Circuit Interrupters (GFCI)：
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 wave form
provided by utilities, compliance with UL standards requires us to test and
recommend specific GFCI.
Cotek has tested the following GFCI － protected 20A receptacles and found
that they functioned properly when connected to the output of the Inverter.
3-6-1. Neutral Grounding (GFCI’S)：
3-6-1-1. 120V models：The neutral conductor of the AC output circuit
of the 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 AC breaker
panel. For models configured with a transfer relay, while AC
utility power is presenting and the Inverter is in bypass mode,
this connection (neutral of the 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.
3-6-1-2. 230V models：There is no connection made inside the
Inverter from either the line or neutral conductor to the safety
ground.
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