Our local inspector has been recently failing service inspections based on the fact that people are using 4/0 SER for 200 amp parallel runs to 400 and 600 amp residential services. In the instance of having separate 3 parallel runs of URD from the transformer, through a CT Can to individual 200 amp breaker disconnects and 4/0 SER to feed 200 amp individual panels, is he correct in his analysis?
He says that we need to run 300 MCM instead of 4/0 for parallel runs even if the go to individual panels from 200 amp breakers. I thought the exception for residential service size wire included parallel runs.
Thanks
He says that we need to run 300 MCM instead of 4/0 for parallel runs even if the go to individual panels from 200 amp breakers. I thought the exception for residential service size wire included parallel runs.
Thanks