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3 pin sealed transformer?
Hi - on a standard 3 pin sealed plug-in transformer ( reducing led lights from 240v to 12v ) does the earth pin actually do anything - there is only two wires coming out of the plug but the plug obviously plugs in to the mains with all three pins.
For your purposes, it does nothing. The 3rd pin is to ground metal casings and any barriers inside the transformer.
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