I'm afraid to say that you should really find some expert help in your EMI problem. This is not something that can be tackled effectively with a few simple forum exchanges. As others have indicated, the whole situation has to considered - the regulations (i.e. exactly what the EMI limits that...
Thanks to waross and dpc for their replies. I have passed the information on to my friend and will emphasize the importance including the fact that he should get the anti-oxidant and pass it on to the electrician! Your help is greatly appreciated.
I have been asked by a friend on whether or not he should use aluminum wire on a new service entrance he is having installed at his small RV park. The electrical service is 240 VAC, 800A using 2 feeders from a common service drop. The local electricians are not at all enthused about using...