[ed_denu]

Here's another way of looking at the size versus wattage question. The oven you're proposing is 600 cu. ft. with 24,000 watts. This computes to 40 watts per cu. ft.

I might be making a false assumption that wattage requirements can be computed in a linear fashion based on oven size, but if other members would like to share their oven measurements and element wattage it might make for interesting comparisons.

My oven is 27 cu. ft. and has 5,200 watts, or 192 watts per cu. ft. For my needs the heat-up cycle time is acceptable at around 25-30 minutes.