Samlex America SK - Manual (Page 22)

3-6. AC Safety Grounding：
The AC output ground wire should go to the grounding point for your loads
( for example, a distribution panel ground bus ).
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 from AC
sources (such as inverters and generators) which have their
neutral conductors tied to ground in the same way as the
neutral conductors from the utility tied to ground at the AC
breaker panel. For models configured with a transfer relay,
while AC utility power is present and the Inverter is in bypass
mode, this connection (the 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.
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 with 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.
Cotek has tested the following GFCI – protected 20A receptacles and found
that they functioned properly when connected to the output of the Inverter.
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