Don:
Had to jump in with my 2 cents..
IF it's an "engineered" design, and he calls for a 400 amp service, and does not specify wire size, 500 is acceptable in our areas.
IF the "specs" say 600 MCM, then it MUST be 600, as the Plan Review approves the drawings/design for spec and code compliance.
In both the above examples, we (AHJs) are assuming that load calcs were performed, if they are not submitted.
Again, if the drawings/specs say "parallel, thats the way it has to be. To change the engineer's design/spec/drawings, a sealed and signed letter, or a revised set of drawings must be submitted for plan review & permit app approvals.
John
[This message has been edited by HotLine1 (edited 01-29-2003).]