What I meant by conservative is that the calculated service size would be larger using the standard method vs the optional method. From the perspective of a practicing EE who worries about liability issues, and often not knowing exactly what the appliance and heating/air cond. ratings are, or how they might get changed during the construction phase, it seemed prudent to me to use the more conservative method, better safe than sorry. I wanted to see which method the experience base out there is using.
