SamplexPower PST-1500-12 Mode D'emploi page 36

SECTION 8 |
8.5 AC SIDE CONNECTIONS
WARNING! Preventing Paralleling of the AC Output
1. The AC output of the inverter cannot be synchronized with another AC source
and hence, it is not suitable for paralleling. The AC output of the inverter should
never be connected directly to an electrical breaker panel / load center which
is also fed from the utility power/ generator. Such a connection will result in
parallel operation and AC power from the utility / generator will be fed back
into the inverter which will instantly damage the output section of the inverter
and may also pose a fire and safety hazard. If an electrical breaker panel / load
center is being fed from the utility power / generator and the inverter is required
to feed this panel as backup power source, the AC power from the utility power/
generator and the inverter should first be fed to a manual selector switch / Auto-
matic Transfer Switch and the output of the manual selector switch / Automatic
Transfer Switch should be connected to the electrical breaker panel / load center.
2. To prevent possibility of paralleling and severe damage to the inverter, never
use a simple jumper cable with a male plug on both ends to connect the AC
output of the inverter to a handy wall receptacle in the home / RV.
8.5.1 Bonding of AC Output Neutral to Chassis Ground
The Neutral slots of the NEMA5-20R GFCI Duplex Receptacles (5, Fig 6.1) are internally
bonded to the metal chassis of the inverter.
8.5.2 AC Output Connection Through Ground Fault Circuit
Interrupter (GFCI)
An un-intentional electric path between a source of current and a grounded surface
is referred to as a "Ground Fault". Ground faults occur when current is leaking some-
where. In effect, electricity is escaping to the ground. How it leaks is very important. If
your body provides a path to the ground for this leakage (dry human body has a low
resistance of only around 1 K Ohm), you could be injured, burned, severely shocked
or electrocuted. A Ground Fault Circuit Interrupter (GFCI) protects people from electric
shock by detecting leakage and cutting off the AC source. The leakage detection circuit
compares the current sent to the load and returned back from the load. If the returned
current is less by 5 to 6 mA due to leakage, the GFCI trips. The GFCI also trips if it sees
Neutral to Ground bond on the load side of the GFCI.
The AC output of this inverter is available through a NEMA5-20R GFCI Duplex Receptacle
(5, Fig 6.1). The Neutral slot of this receptacle (longer rectangular slot) is internally bonded
to the metal chassis of the inverter.
Self Monitoring GFCI: The GFCI is "Self Monitoring Type" as per UL Standard Ul-943. As
soon as the Inverter is switched ON and 120 VAC is available on the internal Line Side
of the GFCI, Red LED marked "Life End Alarm" (5c, Fig 6.1) will flash once and then will
remain OFF. The Green LED (5d in Fig 6.1) will switch ON indicating that AC power is
available at the Load Side outlets.
36 | SAMLEX AMERICA INC.
Installation