Samlexpower Pure Sine Wave PST-600-12 Guide Du Propriétaire page 35

seCtIOn 8 |
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cAUtion!
Do not feed the output from the GfCI receptacle to a Breaker Panel / Load
Center where the Neutral is bonded to the Earth Ground. This will trip the GfCI.
Providing Backup Power Using transfer Switch
for this application, use a Transfer Switch that has Double Pole, Double Throw Contacts
like in Samlex America, Inc. Transfer Switch Model No. STS-30. This type of Transfer
Switch will be able to switch both the Hot and the Neutral and will prevent tripping of
the GfCI due to Neutral to Ground bond in the Utility power:
- feed utility power and output power from the inverter to the two inputs of the Trans-
fer relay
- feed the output of the Transfer Switch to a Sub-Panel to feed AC loads requiring
backup power
- Do not bond (connect) the Neutral and the Ground in the Sub-Panel
- When Utility power is available, the 2 poles of the Transfer Switch will connect the
Hot and Neutral of the Utility power to the Hot and Neutral in the Sub-Panel. The
Neutral of the Sub-Panel will be bonded to the Earth Ground through the Main Utility
Supply Panel. As the Neutral of the inverter will be isolated from the Neutral of the
utility power, the Neutral of the GfCI output will not be bonded to the Earth Ground
and the GfCI will not trip
- When the Utility power fails or is interrupted, the Hot and the Neutral of the GfCI will
be connected to the Hot and Neutral of the Sub-Panel. As the Neutral is not bonded
to Earth Ground in the Sub-Panel, the GfCI in the inverter will not trip.
Grounding to earth or to other designated ground
for safety, ground the metal chassis of the inverter to the Earth Ground or to the other
designated ground (for example, in a mobile RV, the metal frame of the RV is normally
designated as the negative DC ground). An equipment grounding Lug (7) has been pro-
vided for grounding the metal chassis of the inverter to the appropriate ground.
When using the inverter in a building, connect a 10 mm
copper wire from the above equipment grounding lug to the Earth Ground connec-
tion ( a connection that connects to the Ground Rod or to the water pipe or to another
connection that is solidly bonded to the Earth Ground ). The connections must be tight
against bare metal. Use star washers to penetrate paint and corrosion.
When using the inverter in a mobile RV, connect a 10 mm
stranded copper wire from the above equipment grounding lug to the appropriate
ground bus of the RV (usually the vehicle chassis or a dedicated DC ground bus). The
connections must be tight against bare metal. Use star washers to penetrate paint and
corrosion.
Installation
or AWG #8 insulated stranded
2
or AWG #8 insulated
2
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