JFY tech JSI-1100TL Installation And Operator's Manual page 4

 This version of JSI inverters shall be used with panels connected in a "floating"
way, i.e. with positive and negative terminal not connected to the ground.
The equipment is provided with several labels, some of them with a yellow
background, which are related to safety issues.
Make sure to read the labels and fully understand them before installing the
equipment.
The symbols are:
Disposal: Do not dispose of electrical appliances as unsorted
municipal waste, use separate collection facilities. Contact you
local government for information regarding the collection
systems available. If electrical appliances are disposed of in
landfills or dumps, hazardous substances can leak into the
groundwater and get into the food chain, damaging your health
and well-being.
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Equipment grounding conductor (Main grounding
protective earth, PE)
Alternate Current (AC) value
Direct Current (DC) value
Phase
Grounding (Earth)
To avoid risk of electric shock from energy stored in
capacitor, please wait for at least 5 minutes to access
the conductor part of input or output terminals of the
inverter after it is disconnected from the output of PV
panel and AC grid.
Caution: The temperature of metal enclosure may be
high during operation.
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