I use all electric with both my stripping still (150 gallon all copper CSA, six 5500 watt elements and 11 six inch plates) and finishing still (30 gallon, one 5500 watt element with 11 four plates)
I general get an average of 170 proof off 25 proof mash, and put that right into the finishing still. When I do this, I start the finishing still off really slow letting the element gradually heat up turning the wattage up every 30 minutes or so. Just dont go balls to the wall at a 100 percent.