B1. a) A small guest house with 380/220V, 3 Phase 4 wire electrical installation, connected with loadings as follows: • 100 sets of luminaires. Each luminaire consist of two 65W fluorescent lamp. • 20 sets of 100W tungsten lamps. • 10 typically BS1363 sockets of ring type final circuit. • • • 10 typically BS1363, 20A sockets of radical type final circuit. 5 air conditioners, each one with| 12A full load current. 4 three-phase 18kW storage type water heater. Loadings were evenly distributed in each phase, and follow Table 7(1) in CoP guideline: i. Evaluate the maximum current demand of the guest house. ii. Determine the rate value of circuit breaker (Available MCCB in 150A, 200A, 250A, 300A and 400A). iii. This electrical work requires design and installation, what kind of REW should hire?
B1. a) A small guest house with 380/220V, 3 Phase 4 wire electrical installation, connected with loadings as follows: • 100 sets of luminaires. Each luminaire consist of two 65W fluorescent lamp. • 20 sets of 100W tungsten lamps. • 10 typically BS1363 sockets of ring type final circuit. • • • 10 typically BS1363, 20A sockets of radical type final circuit. 5 air conditioners, each one with| 12A full load current. 4 three-phase 18kW storage type water heater. Loadings were evenly distributed in each phase, and follow Table 7(1) in CoP guideline: i. Evaluate the maximum current demand of the guest house. ii. Determine the rate value of circuit breaker (Available MCCB in 150A, 200A, 250A, 300A and 400A). iii. This electrical work requires design and installation, what kind of REW should hire?
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Transcribed Image Text:B1.
a) A small guest house with 380/220V, 3 Phase 4 wire electrical
installation, connected with loadings as follows:
• 100 sets of luminaires. Each luminaire consist of two 65W
fluorescent lamp.
•
20 sets of 100W tungsten lamps.
•
10 typically BS1363 sockets of ring type final circuit.
•
•
•
10 typically BS1363, 20A sockets of radical type final circuit.
5 air conditioners, each one with| 12A full load current.
4 three-phase 18kW storage type water heater.
Loadings were evenly distributed in each phase, and follow Table
7(1) in CoP guideline:
i. Evaluate the maximum current demand of the guest house.
ii. Determine the rate value of circuit breaker (Available MCCB
in 150A, 200A, 250A, 300A and 400A).
iii. This electrical work requires design and installation, what
kind of REW should hire?
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