I've heard about buildings in heavily loaded downtown areas served with what's called a "network service." To me, I look at this setup as as a system of large vault type transformers installed in the street that are paralleled onto the secondary mains and connected with a special switch called a "network protector." I've seen a special kind of electric meter called a "self contained network meter" and needs a fifth terminal? What is the difference between a 120/208 Y network service and a standard 120/208 Y service? I don't understand why a service like this needs a special meter. Perhaps I've got it confused.
If anyone can explain this to me I'd be most greatful. Thanks.
