Here's the situation- The contractor tapped the 400a residential meter can twice with Service Entrance conductors. Once with 4/0 Aluminum to feed a 200a Service panel and again with 2/0 Aluminum to feed a 150a Service panel. Then he installed a #4 awg cu. GEC out of the 200a Service panel and ran it to the water service. Out of the 150a Service panel he ran a GEC #6 awg cu to the water service. The water service is about 75 feet from the Electrical Service panels. What is wrong with this approach?
