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AC output connections
The inverter uses NEMA 5-15R receptacle for connecting the AC output to devices and
appliances fitted with a NEMA 5-15P plug. In this NEMA 5-15 R receptacle, 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 this NEMA 5-15R receptacle, 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 the 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.
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 somewhere. In
effect, electricity is escaping to the ground. How it leaks is very imporant. If your body
provides a path to the ground for this leakage you could be injured, burned, severely
shocked or electrocuted. A GFCI protects people from electric shock by detecting leakage
and cutting off the AC source.
Installation in recreation vehicles (RV) may require GFCI protection on the AC output. In
addition, electrical codes may require GFCI protection for certan residential applications.
There is no intenrnal GFCI protection in these inverters. If required, this protection may
be provided externally by the user / installer.
Grounding to earth or to other designated ground
Please see details regarding grounding under "AC Power Distribution and Grounding"
on page 9.
For safety, the metal chassis of the inverter is required to be grounded 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 bolt with a
wing nut has been provided for grounding the metal chassis of the inverter to the
appropriate ground.
When using the inverter in a building , connect a # 8 AWG insulated stranded copper
wire from the above equipment grounding bolt to the earth ground connection ( 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 # 8 AWG insulated stranded copper
wire from the above equipment grounding bolt 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.
Page 23
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