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against short circuit. Amp rating of the fuse is based on the following considerations:

a) Not less than the Maximum Continuous DC Input Current (Column 2)

b) Closest Standard Ampere Rating of fuse has been used - Refer to NEC-2014

(National Electrical Code) - Section 240.6(A)

c) Where Standard fuse Rating does not match the required Ampacity (Col-

umn 2), the next higher Standard Rating of the fuse has been used - Refer to
NEC-2014 (National Electrical Code) - Section 240.4(B)

d) type of fuse: fast-acting, Current Limiting, UL Class T (UL Standard 248-15)

or equivalent

5) Samlex America, Inc. makes 4 Models of generic / universal Inverter Installation Kits to cov-

er installation requirements of a wide power range from 600W to 3500W for 12V invert-
ers and from 1200W to 7000W for 24V inverters. Please note that the Inverter Installation
Kit that has been recommended in Column (8) may include thicker wire size / correspond-
ingly bigger fuse size than those recommended in Table 8.2. This is acceptable.

fuse in the battery circuit is primarily required for protection against short circuit in
the battery cable run. The size of this fuse has to be equal to or larger than the maxi-
mum DC input current of the inverter at Column (2). further, the Amp rating of the
fuse used for protecting a battery cable against short circuit has to be lower than the
Ampacity of the cable so that the fuse blows before the cable insulation is damaged
due to overheating as a result of fault current higher than the Ampacity of the cable.
The Amp ratings of fuses provided with the Inverter Installation Kits are lower than
the wire size provided with the Kit.

The Kits come with 10ft length of cables to cover battery to inverter distance of up to
10 ft. If the actual cable routing distance from the battery to the inverter is less than
10ft, please cut-off the extra length of cables. This will result in reduction in the over-
all resistance of the cable / reduction in voltage drop and consequently, will improve
the efficiency of the inverter system

8.4.6 Dc input connection

The DC input terminals for battery connection (14 & 16 in fig. 6.1c) have nut and bolt con-
nection - bolt size is 5/16" (18 Threads per Inch). Use ring tongue type of terminals on the
wire ends to fit 5/16" bolt size.

8.4.7 Reducing RF interference

Please comply with recommendations given in Section 3 - "Limiting Electromagnetic
Interference".

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Installation

SAMLEX AMERICA INC. | 37

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Installation

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 Panelboard / 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
Panelboard / 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 / Automatic Transfer Switch and the output of
the manual selector switch / Automatic Transfer Switch should be connected
to the electrical Panelboard / 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 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 AC output of this inverter is available through a NEMA5-20R GfCI Duplex Recepta-
cle (6, fig 6.1a) and also through hardwiring terminal connections located in a com-
partment (13, fig 6.1a) behind the GfCI receptacle. The Neutral slot of this receptacle
(longer rectangular slot) and the Neutral Terminal "N" of the Terminal Block for AC out-
put hardwiring (13, fig 6.1b) are internally bonded to the metal chassis of the inverter.

There is a Green indicator light on the GfCI outlet that will be lighted when the GfCI is
operating normally. The light will switch off if the GfCI is tripped.

The GfCI is provided with the following buttons:

- Reset Button: In case the GfCI is tripped, it can be reset by pressing the “Reset Button”.

note: for the reset button to operate, the inverter has to be in oN condition and
should be outputting AC power (no fault / shutdown condition).

- Test Button: This button is used to test if the GfCI is operating normally. Test the GfCI

periodically to ensure that it is operating normally.

The GfCI will trip due to the following conditions:
-

Leakage

or Ground

ault

Neutral

to Ground bonding (connection) on the load side of the GfCI

CAUTION!

1. Each of the NEMA5-20R outlets is rated for 16A continuous and 20A intermit-

tent. Do not draw more than this rating from each outlet.

or drawing the

full rated output capacity of 25A of the inverter, use AC output connections
for hardwiring (13,

ig 6.1b) as described at Section 8.5.2 below.

2. Do not feed the output from the GfCI receptacle to a Panelboard / Load

Center where the Neutral is bonded to the Earth Ground. This will trip the
GfCI. If the AC output is required to be fed to a Panelboard / Load Center,
use hardwiring connections (please see details given at Section 8.5.2 below).

8.5.1 AC Output Connections for Hardwiring

For connecting the AC output of the inverter to an AC Panelboard / Load Center, sepa-
rate connections are available for hard wiring. Please refer to Fig 6.1. Compartment (11,
Fig 6.1b) contains terminals for AC output. The compartment is covered by Cover Plate
(8, Fig 6.1a) with the help of 4 screws. The AC wiring enters through the metal Strain
Relief Clamp (7, Fig 6.1a). After the connections have been made, tighten the clamp.
AC output connections are as follows:

Terminal Block (13, Fig 6.1b) with Line “L” and Neutral “N” Terminals.
Please note that Line terminal “L” of the AC Terminal Block (13, Fig 6.1b) is internally

Block (13, Fig 6.1b) internally connected togeter at the PCB

connected

Terminal

together at the PCB. Similarly, Neutral terminal “N” on the AC

• Hole diameter:

4.15 mm / 0.16"

• Set screw: #6 (UNf, 40 Threads per Inch) or M3.5 ( Coarse Pitch 0.6 mm)

AC Ground Terminal (12, Fig 6.1b)

• Stud: #6 (UNC, 32 Threads Per Inch)

Neutral to Chassis Ground Bonding

• Neutral “N” is bonded to the metal chassis of the inverter through a loop of wire con-

necting the “N” terminal on the Line side.