What is Short Circuit Current (Isc) in Solar Panel?

What is the meaning of Isc ( I short circuit ) in solar panel output?

Short Circuit Current (Isc) is how many amps (i.e. current) the solar panels are producing when not connected to a load but when the plus and minus of the panels wires are directly connected to each other. If you just measure with an ammeter across the plus and minus leads, you will read Isc. This is the highest current the solar panels will produce under standard test conditions.

When determining how many amps a connected device can handle, like a solar charge controller or inverter, the Isc is used, generally multiplied by 1.25 for National Electrical Code (NEC) 80% requirements.

OK Mr Santhosh , so for determined fuse breaker we used Isc x 1.25 ?