Thanks for the insights! No one has been able to provide me with reliable information about Norwegian distribution systems before, so I appreciate your info very much!
BTW, welcome to the message board!
The IT system made it self to TT at first fault :-)
TT using a corner-grounded delta transformer setup... does feel a bit odd!
Thank you, I just saw your question when googeling for something about payphones.
The self grounding TT description are right. It would probably been better with permanent corner grounding.
I will probably not be regular reader, but just pm me if you have questions about Norwegian oddities
I have just made a controller for my American payphone (AE 120B) for use at home, collecting or returning money depending on answer or not.
dsk
