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Samlex America SK User Manual

Page 22

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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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