How do you calculate KVA demand?


Quick Answer

KVA demand is most effectively calculated by observing power demand within a system over the course of a year, notes the Electrical Contractor website. If these statistics are not available, then estimated total demand must be used in place of yearly demand until statistics can be accrued.

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Full Answer

Total demand is the full need for power expressed within a system when all of its components are active. The ampacity of a given system is not always sufficient to meet total demand, notes Electrical Contractor.

Total demand statistics are acquired by watching system performance during a 15-minute timeframe. This gives assessors a rough idea of the system's demands and its capacity to handle new loads.

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