Electrical Load Calculation
MEP IS 732:1989~2 min
Calculate total connected load, demand load, and cable sizing for a building.
Formula
Demand Load = Connected Load × Demand Factor
Input Parameters
Results
Total Connected Load
6,500W
Demand Load
5,200W
Design Current
26.6A
Apparent Power
5.20kVA
Step-by-Step Method
- 1Sum all connected loads.
- 2Apply demand factor: Demand load = Connected load × DF.
- 3Calculate current: I = P / (V × PF).
- 4Select cable from IS 732 current rating tables.
Engineering Notes
- •Demand factor typically 0.7–0.9 for residential buildings.
- •Add 25% spare capacity for future loads.
Code Reference
IS 732:1989
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