FLIT is a part of Verification to ensure efficiency of automatic disconnection of supply, thereby ensuring some amount of safety against electric shock and fire effects (fire) in Low Voltage Electrical Installations.

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FLIT is included in the CEA electricity Regulation 2023 as a mandatory test in every electrical installation.
Modern electrical safety standards (including NEC 2023, IS7900, IS732, IS3043 etc) demand verifying the efficiency of automatic disconnection during commissioning and periodically.”