Hi there... Need help..urgently. About to order my 15KV 60mA NST. An Allanson. new. Good price for new. But I just learned it has built in Ground Fault Protection. Is this going to cause big problems? or is it just a UL thing. I recall a discussion about GF circuits but I can't recall if the collective answer was Yea or Nay. Help...real quick. dealer is holding off shipping until I get back to him. Concerned in Cowtown Ted R