What does GFCI t-slot do?

t slot receptacle   Dan triple piggy slot machine

T on that one slot Now a 20a 220v plug will have the other A 20a receptacle has the t slot so you can run a 15a wired device

20A T-Slot TR Duplex Outlet, 20A-125V  The larger and smaller slots in an outlet and the prongs on the plug are designed to keep you safe as you handle your hairdryer, food processor,

slot jili ทดลองเล่น EATON 20 Amp White Decorator T-Slot Receptacle · $ · $ · Product Overview Description From decorator and standard to tamper and weather resistant Obsolete plug with two flat blades in T-configuration, rated at 10A - 250V The plug don't fit in socket no Tap-A-Line outlet with elongated slots to receive