> It provides isolation vs ground and prevents the circuit from being completed through your feet and the floor: Ah I think I see what you're getting at. Are y

> It provides isolation vs ground and prevents the circuit from being completed through your feet and the floor: Ah I think I see what you're getting at. Are you saying if your feet are at the same potential as the chassis then there's an alternative DC path to ground through your body, which the iso transformer breaks? That's a good point, needed to think about that one a bit! EDIT: Hmm, in that circumstance you'd be safe (from grounding DC through your feet) if the chassis was live! If the chassis was connected to AC neutral then your body could offer a path for high voltage DC to complete the circuit back to the chassis, but not if it was connected to AC line (hot). Quite an interesting thought.