/ Posted by: Michael Hickey
Confused between O-PEN and PEN fault devices? Here’s what the terms really mean and how to choose the right protection...
/ Posted by: Michael Hickey
A PEN conductor combines earth and neutral in TN-C-S (PME) supplies. If it fails, exposed metalwork can rise in voltage....
/ Posted by: Michael Hickey
EV chargers can generate DC leakage that blinds standard RCDs. This guide explains when Type B RCD protection is required,...