Question: how to calculate electrical service load?
Answer: Go to annex D in your code book for reference. ... 
Using your calculator multiply 2500 x 3 = 7500.
Small appliance load = 3000.
Laundry load = 1500.
Using your calculator add 7500, 3000, 1500 = 12000 now subtract 3000 = 9000 now multiply by .35 = 3150 now add 3000 = 6150.