Pierre I think he means two separate runs from the 400 amp meter to two separate 200 amp panels. Parallel but not parallel conductors as in 310.4

If this is whats happening they do not have to be the same length.

Jim are the conductors joined together at one end or both ends?

Bob

[This message has been edited by iwire (edited 09-23-2003).]

Bob Badger
Construction & Maintenance Electrician
Massachusetts