Epever IPower Series User Manual page 6

 The wire connects between battery and inverter should be
shorter than 3m, the current density should be less than
3.5A/mm
longer than 3m, the current density should be reduced.
 A fuse or breaker should be used between battery and inverter,
the value of fuse or breaker should be twice of the inverter rated
input current.
 Do not connect the battery charger or similar devices to the
input terminal of the inverter.
 Do not put the inverter close to the flooded lead-acid battery
because the sparkle in the terminals may ignite the hydrogen
released by the battery.
 It's an off-grid inverter, do not connect the AC output terminals
to the grid or electrical source, otherwise the inverter may be
damaged.
 This inverter can only be used singly, parallel connection or in
series will damage the inverters.
 Risk of electric shock, don't touch output port when the inverter
is working. The output is forbidden to connect other power
sources or grid, otherwise the inverter will be damaged. The
inverter must be in off, when connecting load.
 Do not attempt to repair the fault inverter by yourself, otherwise it
may lead to a serious accident. Please contact the manufacture'
s engineer.
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while the output of inverter is fully loaded. If the wire
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