If I stick a carrier in a carrier, what will happen, will it not short-circuit?
Answer from: Alexey R.:
And in general, given that the extension cord has one plug, I think you just can not stick it in itself, without changing the design. But if you solder the extra plug, connect the extension cord to a power source and then plug the extra plug in (short-circuit), of course it will short-circuit. It will be very loud and bright.