Had a good chat with
@LarryFine on the phone earlier today. Good input. Thanks, brother
You're welcome. We went over such things as hole-sawing between panels to relocate generator circuits to one panel, how to fit one ATS and one disconnect in the wall-space, how to explain options to the customer, etc.
I recommended providing an estimate for a full-capacity system with a 400a ATS and 70-75kw genny, as well as a realistic system with only one panel serving loads that really can't wait for normal power to be restored.
I also suggested sitting with the customer and going over every circuit, and assign each to one of three columns: Definitely on the genny, Definitely not on the genny, and Optional depending on leftover capacity or space.
One thing I didn't bring up was the additional gas volume required for either size. A larger generator increases the likelihood that the existing gas line and meter will have to be up-sized to provide the necessary BTU for the genny.
And I think I've got a lead on a 26kw generator that comes with a service rated ATS - thanks
@electrofelon for the mention of the Smart Management Modules. Now to convince the customer that roughing it means no hot tub and no steam shower
Well, there's your 100a emergency capacity. You could either supply the 100a panel and avoid load-shedding if you can narrow down the generator list far enough, or supply just the 200a panel and incorporate load-shedding.
I think that's the perfect compromise in capacity selection would recommend avoiding trying to supply both panels, i..e. the entire house, on a 26kw generator. The customer is more likely to expect everything to work like normal.
