I have a customer that has a 200A main panel and he has a 100A sub going to his attached barn. The cable going to the barn is a #2 SE cable three wire, copper. I told him since the barn is not seperate from the house the feeder should be 4 wire. He agrees to this and understands the sub needs to have the neutral buss isolated and a ground buss installed. His question to me was, can a single conductor be run along side the SE cable to provide the ground. I have not been able to find any information that clearly shows this can not be done. After two days of searching through the Code I am at a loss to find something to show the customer why the SE cable should be replaced instead of his proposed solution. Your comments are welcome.
Thanks
Dave T.
[This message has been edited by gto6t7 (edited 01-01-2001).]
