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Electrical Designing
- Introduction- Basics Definitions, Types of Electricity, Power, Power Factor
- Types of Electricity & Power
- Standard Voltage & Frequency levels in different countries
- Electrical International & Indian Standards
- MEP Services Overview
- Electrical Services- Internal & External Services
- Lighting & Power Circuit
- Problems on Daily Use Circuit
- Illumination / LUX Level Calculations
- Ratings of Lamps
- Illumination Calculation
- Cable Selection
- Colour coding for wires
- Cable Sizing Calculation
- Voltage Drop Calculations
- Conduits
- Switch gear
- Sizing and selection of CB (MCB and MCCB’s)
- Earth Leakage CB
- Distribution boards and Meter panels
- Transformer- Sizing and selection
- Capacitor Bank Selection
- Emergency Backups
- Earthing
- Cable Tray- Types & Use
Introduction- Basics Definitions, Types of Electricity, Power, Power Factor
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Electricity- Flow of negatively charged particle- Electron
Atom-
Protons. Electrons. Neutrons.
Current- Flow of electrons in a conductor
Unit-Amperes (A)
Voltage- Potential Difference between ends of conductor or rate of flow of electrons
-Force required to push electron to flow in a conductor
Unit-Volt (V)
Power- Product of voltage and current
P= V.I
Units- Watt (W)
| DC | AC | |
| Single Phase | P=V.I | P=V.IcosΦ |
| 3 phase | √3 V.I | P=√3 V.IcosΦ |
cosΦ= power factor
Ohms Law- V∝I
V=IR
R-Proportionality Constant (resistance)
Conductor- In conductor e– will be moving freely which conducts electric current
e.g- All metals
Best conductor- gold and silver
Normally used for electric purpose- Cu, Al, Fe
Semi-Conductor- which conducts electricity partially
e.g- p-n junction diode, Si, Ge
Dielectric Insulator- poor conductors of electricity
e.g- wood, plastic
Good learning , explain in easy to understand
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Happy to give test
Thank you sir