Not crazy, VERY NICE!!
I have 200amp service to my main box and I am going to install a 100amp sub-panel. At best, I'll be able to draw 33amps to each element (they only require 24), which should bring 60 gallons of 170* water to a boil in around 25 minutes--not bad. The only draw back is temperature control. I haven't yet decided if I am going with a electric thermostat or old fashioned stove dials.
With 16500 watts and 60 gallons, I calculate about 80 minutes to reach the boil from 70F. Still not bad though...
I make 35 gallon batches and my boil kettle has two 4500 watt elements. At the start of brewday, I heat 50 gallons of water (strike plus sparge) from 50F to 160F and in my system it takes about 110 minutes. During the sparge, I turn on the elements as soon as they are covered with wort. By the time the sparge is completed, I am nearly at a boil.
Not crazy, VERY NICE!!
Eventually, but I need to further refine my recipes and technique first. It will be a long way off- SC professional brewing laws are pretty difficult to weed through if you aren't independently wealthy.
Any more info on the SC laws that you've researched? I'm curious as to what it would take and what the best way to go would be in SC.