I teach first year electrical and have a quiz question I now have 5 separate answers for and would like a few more, preferably a correct one with the logic backing it up.9 apartment units all with ranges (this is a load calc) 3 units with 18kw ranges, 3 units with 8kw ranges and 3 units with 3kw ranges.
My first thought was to use columns A, B and C for each of the 3 corresponding sets and add the sum of the 3 answers. Having spoke with coworkers it was suggested that note 2, ranges of unequal rating, be applied and "...using 12kw for any range less than 12kw..." but the ranges of 8 kw and 3 kw do not fit into the parameters of note 2. (Some being less than 8 3/4kw) Further it was suggested to use both notes 2 and 3 and combine these sums when calculated (breaking the problem into parts). It was also suggested to add all of the items together for a total kw and divide by the 9 appliances to find the "average" and then apply note 2.
...OR... am I simply reading way to much into this considering 220.84 C multifamily dwellings, (we dont do multifamily from our shop).
