Connecting to multi-wire branch circuits
Do not directly connect the hot side of the 120 VAC of the inverter model to the two hot
legs of the 120 / 240 VAC electrical breaker panel / load centre where multi-wire
( common neutral ) branch circuit wiring method is used for distribution of AC power.
This may lead to overloading / overheating of the neutral conductor and is a risk of fire.
A split phase transformer ( isolated or autotransformer ) of suitable wattage rating ( 25 %
more than the wattage rating of the inverter ) with primary of 120 VAC and secondary of
120 / 240 VAC ( Two 120 VAC split phases 180 degrees apart) should be used. The hot
and neutral of the 120 VAC output of the inverter should be fed to the primary of this
transformer and the 2 hot outputs ( 120 VAC split phases ) and the neutral from the
secondary of this transformer should be connected to the electrical breaker panel / load
centre.
AC output connections - PSE-24125 A / PSE-24175A
These inverters use NEMA 5-15R receptacles for connecting the AC output to devices
and appliances fitted with a NEMA 5-15P plug. In these NEMA 5-15 R receptacles, two
rectangular slots are connected to the current-carrying conductors of the AC power source
inside the inverter. The round slot is the “equipment grounding” connection and is
internally connected to the metal chassis of the inverter.
CAUTION! :
In these NEMA 5-15R receptacles, the current carrying conductor connected to the
longer rectangular slot is isolated from the metal chassis of the inverter. Hence, when the metal
chassis of the inverter is connected to the earth ground, the longer rectangular slot is not grounded
to earth ground. The longer rectangular slot is, therefore, not a “neutral”. Do not touch this slot as it
will be at an elevated voltage with respect to the metal chassis / earth ground and may produce an
electrical shock when touched.
AC output connections -PSE-24275A
The AC output connections have three insulated conductors – one black and one white
for carrying current and one green for “equipment grounding”. The green color “equip-
ment grounding” conductor is connected to the metal chassis of the inverter. These three
conductors exit through a pocket in the front side of the inverter. These three conductors
are used for hard-wiring the inverter to a breaker panel. Use the insulated wire nuts / butt
splices provided to splice the wires.
For drawing the full rated power of the inverter,
the output conductors should be hard wired to a suitable breaker panel.
A separate plate which has a NEMA 5-15R receptacle wired through a 15 A beaker has
also been provided. This plate with the receptacle and breaker fits in the pocket through
which the output conductors exit the inverter. The NEMA 5-15R receptacle can be
connected to the three output conductors if the AC power output is required to be drawn
from the front panel of the inverter. Use the insulated wire nuts / butt splices provided to
splice the wires.
Please note that the NEMA 5-15R receptacle is wired through a 15 A
breaker and hence, the power delivered from this receptacle will be limited to 1500
watts only.
CAUTION! :
The white current carrying conductor is not bonded to the metal chassis of the
inverter. Hence, when the metal chassis of the inverter is connected to the earth ground, this white/
current carrying conductor will not be grounded to earth ground. The white conductor is, therefore,
not a “neutral”. Do not touch this conductor as it will be at an elevated voltage with respect to the
metal chassis / earth ground and may produce electrical shock
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