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
Weighted PF = Total kW / Total kVA without diversity? Compute: maximum demand calculation 3 phase
(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) kVA per load (without diversity): Lighting: 10/0