NEC 220.87 additional loads

[Greg1707]

I have project in a condo/apartment building. We are remodeling the kitchen in one of the condo units. We will be adding a microwave to the kitchen.
The AHJ requires calculating the additional load and refers to NEC 220.87 and 90.4.

That article allows for determing existing loads using actual load data over a one year period.

I don't understand. Can I just provide the load calculation under 220.40?

 

[LarryFine]

That article allows for determing existing loads using actual load data over a one year period.

I don't understand. Can I just provide the load calculation under 220.40?

I believe that either is acceptable; using data relieves you of having to do the calc.

 

[suemarkp]

Yes, if it fits within the calculation. If the calculation says you are maxxed, in reality you probably arent and can use 220.87 to save you if you have the data.