1. Electrical Cable and wiring
- Electrical cables and Wiring- as per electromagnetic pick up and radiation protection.
- Busbar Trunking System or BBT
2. Electrical Basic
- What is electrical power.
- Power factor, active & reactive power basic concept.
- What is power line carrier channel.
- Relationship between phase voltage and line voltage in 3 phase wye connection.
- Low power factor effect in transmission and consumer electrical system.
- Why electrical equipments rated in KVA not in KW
- Frequency converter function and basic.
- What is opto-coupler or opto-isolator.
- Half and full wave rectification from ac to dc.
- Rectifier / Inverter / Capacitor / Inductor details
- Varistor functions, characteristics and use.
- Solenoid basic working principle and a practical Solenoid valve .
- Solenoid types, parameters and practical application area.
- Common electrical and instrument symbols.
- Basic insight on power transistor, JFET and MOSFET.
3. Electrical Safety and standards
- How to select Fuse or Circuit Breaker for group of motor in same branch circuit as per NEC
- Splicing of electrical wire- answer to some basic confusion.
- Methods of Circuit Wiring as per BNBC
- The concept of earthing system as per BNBC- Bangladesh National Building Code.
- Why socket and light should not be in the same circuit.
- Electrical wiring- what need to know in brief.
- Electrical international codes and standards.
- Dead front electrical panel construction
- The 5S’s & “LOTO” standard and procedure for a safe, efficient workplace.
- How higher sized switchgear or fuse in circuit is fatal and disaster.
- The massive drive of safety & compliance by multinational retailers in RMG Bangladesh(part-1 of 3 )
- Electrical Safety standards demand by multinational retailers in RMG Bangladesh. ( Part 2 of 3)
- Earth and neutral conductor size and other safety codes for RMG in Bangladesh (Part 3 of 3)
By Hasanul Banna Kashemi
- Energy saving: The needful technology for today’s world. By Liakot Ali Khan.