Steren INV-300 Manual De Instrucciones página 21

Before to connect the battery, ensure that the inverter switch is in O position (off).
The energy source that you must use in the inverter must have a minimal voltage of 11 V - - -
and maximum of 14 V - - -. The power source may be a combination of the car battery and the
alternator (when the car's engine is working).
Don't install the inverter in a system with positive ground.
The inverter must be connected only to a batteries or power sources that have a normal or
average voltage of 12 V - - -. The voltage inverter won't works with 6 or 24 V - - - sources.
Before to connect your devices to the inverter, always check its max consumption. Don't
connect devices that require a nominal high power of inverter.
If connect more than one device to the inverter, ensure that the sum of all power do not exceed
the inverter capacity (300, 400, 600, 1000 or 1500 W depends of the model).
You may note small sparks when you connect the inverter and the battery. Ensure
that is not flammable liquids near the inverter; this may cause an explosion.
21
CONNECTION