(a) A certain guesthouse has following loads, Utilization Diversity Factor Factor 1 0.9 1 0.6 0.7 0.7 0.4 Load 20 Nos. of 3x18 W triple fluorescent lamps (230 V, p.f=0.95, each ballast power consumption =1.8 W) 100 Nos. of 15 W, 230 V, p.f=0.98 compact fluorescent Non- essential lamps loads 6 Nos. of thermostatically controlled 400V, 10.5 kW, p.f= 0.85, 3 phase air conditioners 6 Nos. of 30A ring circuits feeding to 13A socket outlets. Each ring circuit contains 6 socket outlets. 4 Nos. of 1500 W, 230V, single phase instantaneous type water heaters Essential 76 Nos. of 12 W single fluorescent Emergency lamps (230 loads V, p.f=0.95, ballast power consumption =1.8 W) (Emergency Operate only when utility supply is not available load) 2 Nos. of 4.5 kW, 400 V, 3 phase cookers 2 Nos. of 15 kW, 400 V, p.f= 0.9, efficiency= 0.8, 3 phase Lifts 1 0.4 1 0.9 1 0.7 0.5 1 The guesthouse has a 3 phase 400V utility supply. It is decided to have a TT earthing system. An emergency generator has also to be installed to supply power only for essential loads when there is a failure in the main supply. It is expected to distribute single phase loads fairly equally among three phases. i. Determine the Non-essential, emergency and total demand of the installation. Select suitable minimum capacity for utility supply and emergency supply