Maximum Demand Calculation | 3 Phase ((top))

Weighted PF = Total kW / Total kVA without diversity? Compute:

kVA per load (without diversity): Lighting: 10/0.9 = 11.11 Sockets: 15/0.8 = 18.75 Conveyor: 23.91/0.85 = 28.13 Welder: 30 kVA (given) ×0.3 duty = 9 kVA HVAC: 18/0.8 = 22.5 Sum kVA = 11.11+18.75+28.13+9+22.5 = 89.49 kVA Sum kW = 10+15+23.91+5.4+18 = 72.31 kW (note: welder active 5.4, not 30) Weighted PF = 72.31/89.49 = 0.808 maximum demand calculation 3 phase

MD_kVA = 50.28 / 0.808 = 62.23 kVA

Load Name | kW | PF | kVA | Demand Factor | Coincident kW | Coincident kVA ----------|----|----|-----|---------------|---------------|--------------- ... | | | | | | Total coincident kW = _______ Weighted PF = _______ MD_kVA = Total coincident kW / PF = _______ Add margin (____ %) = _______ Selected MD = ______ kVA Weighted PF = Total kW / Total kVA without diversity

If welder connected to L1‑L2, and conveyor on L2‑L3, the peak phase might be L2. For final design, balance loads. For final design, balance loads

(if loads are independent, DF ~1.2) But here, conveyor and HVAC may run together → use 1.1. Adjusted MD_kW = ( 55.31 / 1.1 = 50.28 , kW)