You can put a disconnect in the box where you transition to the sealtite
if you
wanted that way of unloading the generator while you are starting it.

I do not understand this, sorry.

You do understand you must have a transfer switch that isolates
everything the generator is powering from the grid while it is
operating, don't you?

He said in an earlier note that he has a transfer switch. I was just suggesting
that if he wanted a disconnect next to the generator so he could remove the
load while he was starting it the junction between the flexible whip from the
wall to the gen and a rigid conduit would be a logical place to do it.