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Question:

A single family dwelling unit has a branch circuit lighting load of 1,90,000 VA. What is the demand load of a dwelling unit after the demand factor applied?

A 61450
Explaination

Demand factor for first 3000 is 100% so = 3000 VA
Demand factor for load Between 3000 to 120000VA is 35% = 117000 x 0.35 = 40,950
Demand factor for load above 120000VA is 25% = 70000 x 0.25 = 17500
Total demand load= 3000 + 40950 + 17500 = 61450.