What is FAT Testing?

FAT Testing – or Fixed Appliance Testing, is the process of ensuring a fixed or built-in appliance or equipment (something that usually connects to a fused spur) is safe to use, doesn’t have any damaged external parts, and doesn’t pose an electric shock risk.

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Historically fixed appliances were not tested, this is because PAT Testers generally only tested devices with plugs on, and electrical condition tests (EICR’s / Periodic Inspections) only tested the wiring within the walls, consumer unit’s, and outlets, not the devices wired into them.  This changed in the 5th edition of the In-service Inspection and Testing code of practice, bringing them in scope.