hello! isolation transformers are supposedly protecting from electric shock without them, the voltage source is connected to a circuit and the circuit is connected to earth via an earthing wire. if you touch the live circuit, a closed circuit will be formed that will give you electric shock: the current will flow from the live circuit through you to the earth and from the earth to the earthing cable so the purpose of isolation transformer is to actually isolate this earthing cable, so that there will be no path for the current to return to the live circuit and thus form a closed circuit am I right? my question is: after installing an isolating transformer, don't we lose the earth wiring protection of the circuit? which serves the thunder protection?