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