In article , David Lesher wrote:
(Doug Miller) writes:


In a subpanel, the two bars MUST NOT be electrically connected.


I don't claim to know the code, but if this is a standalone
building, I'd verify the same rule applied. I believe it does
but...

This applies to any subpanel, regardless of whether it's in a separate
building or not. If he installs a separate _service entrance_ in the new
building instead -- that is, *not* fed from his existing service -- then it
would be a main panel.