Hi all, I have with me an Elektra Modern Maxi two-group 230/380V. It has a power cord with the standard blue, brown and green leads, but also two black wires. These two wires go to the terminal strip, then terminals R/L1 and S/L2 on the main on/off power switch. My best guess would be that these wires are used in a 380V situation whereas the blue/brown are for 230V, but have been unable to confirm with a websearch and the phone calls I've made. Does anyone know for sure?
Thanks for any help and advice. Cheers

I'm not familiar with that specific machine, but I do have European electronics training and it sound to me like a typical 380V connection.
Blue is neutral, green/yellow is ground and all the others ones are the three phases each of then having equal voltage. Hope that helps.

see:
http://en.wikipedia.org/wiki/Three-phas ... olor_codes
or
http://en.wikipedia.org/wiki/Electrical ... Color_code

blue one leg
all other together (black and brown) other leg
yellow/green ground

Wonderful responses all. Thanks!
So what I think I'll do is jumper the black and brown wires together at one side of the terminal strip, then run a standard cord out to the plug to prevent future electricians/owners from getting confused. Really appreciate the help. Cheers