I am surprised no one mentioned the fact that this is purely a local building code issue.
These requirements are nowhere in the NEC.

I suggest contacting a local AHJ office for the exact answer.

From a personal opinion, I would say yes, interconnect them. Also use the same (or compatable) brand.

*Typo*



[This message has been edited by Speedy Petey (edited 05-22-2005).]


Speedy Petey

"Anyone who has never made a mistake has never tried anything new." -Albert Einstein