chester wrote:


The US NEC requires a disconnecting means for each separate structure.

"225.31 Disconnecting Means.
Means shall be provided for disconnecting all ungrounded conductors
that supply or pass through the building or structure.
225.32 Location.
The disconnecting means shall be installed either inside or outside of
the building or structure served or where the conductors pass through
the building or structure. The disconnecting means shall be at a
readily accessible location nearest the point of entrance of the
conductors. For the purposes of this section, the requirements in
230.6 shall be permitted to be utilized."

So as long as your panel is located "at a readily accessible location
nearest the point of entrance of the conductors" all you have to do
is install a double pole breaker with a breaker tie down kit and feed
your supply into the breakers terminals. That breaker is then the
service disconnecting means for the shed. The phrase "nearest the
point of entrance of the conductors" is generally held to mean not
more than five linear or ten wire feet from were the conductors enter
the structure.

Since, IIRC, you are in Washington State you would be under the
Uniform Building Code (UBC). The UBC has no rules about whether the
disconnect is inside or outside of the structure. The Southern
Building Code required and exterior disconnecting means at one time.
--
Tom Horne

"This alternating current stuff is just a fad. It is much too
dangerous for general use." Thomas Alva Edison


OK so just add a double pole 30A breaker as a main breaker in the panel.

Yes with a breaker tie down kit provided that the panel is mounted
"nearest the point of entrance of the conductors."
--
Tom Horne

"This alternating current stuff is just a fad. It is much too dangerous
for general use." Thomas Alva Edison