I just installed a new onde and upgraded to a 220/240V since I can use a smaller section wire gauge. No neutral, just 2x120V live wires. But since I'm not a su

I just installed a new onde and upgraded to a 220/240V since I can use a smaller section wire gauge. No neutral, just 2x120V live wires. But since I'm not a suicidal person, and I'm following the NBR5410 standards, I also installed a decent ground wire and a differential residual interruption device. Any current above 30mA in excess and the circuit is off.