I've seen NEMA plugs and sockets installed and used in specialist applications at 230V here in ireland and they were extremely unsatisfactory. They spark really badly when they're unplugged! I presume this doesn't happen at 110V?
We removed them and replaced them with non-standard keyed MK BS1363 plugs/sockets instead as they don't comply with any acceptable safety regs here.
Only acceptable outlets here are BS1363 (normal), Schuko and BS546 (old stuff and lighting only) and CeeForm industrial sockets.
