Electrical Systems Design in Buildings

Question 1

What is the importance of electrical systems design?

Answer 1

1. safety - prevent electrical fires, avoid electrical shocks
2. efficiency - minimize energy loss, optimize performance
3. reliability - ensure continuous operation, handle expected loads
4. compliance with codes and standards - follow national and local regulations, ensure legality and safety

Question 2

electric potential difference

Answer 2

Voltage (V)

Question 3

flow of electric charge

Answer 3

Current (I)

Question 4

opposition to current flow

Answer 4

Resistance (R)

Question 5

electric currents common in buildings

Answer 5

Alternating Current

Question 6

electric currents used in specific applications

Answer 6

Direct Current

Question 7

rate of energy consumption

Answer 7

Power (Watts)

Question 8

total consumption over time

Answer 8

Energy (kWh)

Question 9

comprehensive set of guidelines and regulations that govern electrical installations

Answer 9

Philippine Electrical Code (PEC)

Question 10

key regulations in the US, safety and installation standards

Answer 10

National Electrical Code (NEC)

Question 11

global standards and international compliance

Answer 11

International Electrotechnical Commission (IEC)

Question 12

What component of electrical system that is located at the service entrance?

Answer 12

Main disconnect switch

Question 13

the central power distribution, breakers and circuit protection

Answer 13

Panels and Distribution Boards

Question 14

pathways for electricity, various types and ratings

Answer 14

Conductors and Cables

Question 15

overcurrent protection and prevents electrical faults

Answer 15

Protective Devices (Circuit Breakers, Fuses)

Question 16

end-use points, various types of fixtures and outlets

Answer 16

Lighting and Power Outlets

Question 17

What are the types of loads?

Answer 17

• lighting
• power
• HVAC
• special equipment

Question 18

maintain stable voltage levels, avoid voltage drops or spikes

Answer 18

Voltage Regulation

Question 19

address waveform distortions, use filters and mitigation techniques

Answer 19

Harmonics

Question 20

ratio of real power to apparent power, improve efficiency with correction devices

Answer 20

Power Factor

Question 21

voltage regulators, harmonic filters, power factor correction devices

Answer 21

Solutions for Power Quality Issues

Question 22

a term in safety measures in power distribution where it provides path to ground for fault currents and enhance safety and stability

Answer 22

Grounding and Bonding

Question 23

a term in safety measures in power distribution where it uses circuit breakers and fuses, protect against excessive currents

Answer 23

Overcurrent Protection

Question 24

a term in safety measures in power distribution where it guards against voltage spikes, use surge protectors and arresters

Answer 24

Surge Protection