Help required please, I've been on the phone for the best part of an hour going round in ever decreasing circles.EDF are the Electrical distributors,the bills are issued by EDF but absolutely nobody can let me know what the existing system is. It is an 100a overhead supply, there is no earth at the property and I need to know if PME is available, if it's not then I assume it's a TT system and must put a earth electrode in place. Has anybody have a contact No that I might be able to use? The ladies on the other end of the phone are very polite and sympathetic but I've not been able to talk to anybody about technical details It's an absolute shambles.