Basic Knowledge of Electrical Engineering and Residential Electrical Installation

The pictures you send are a set of basic knowledge about electrical engineering and electrical installation in shelters, divided into four main parts:

1. Key Electrical Concepts

This section tells of the conversion of important electrical units of measurement, such as:

• Power: 1\ text {HP (horsepower)} = 746\ text {watts} and 1\ text {kW (kilowatts)} = 1000\ text {watts}

• Value Conversion: How to change a value from AMP (Amps) to kilowatts (kW) or KVA to a given voltage (e.g. 240V or 415V)

• Resistance: Ohm unit conversions such as 1\ text {k}\ Omega = 1000\ text {}\ Omega and 1\ text {M}\ Omega = 1,000,000\ text {}\ Omega

2.Selection of breaker size (MCB) to suit the load.

This table helps to select the Miniature Circuit Breaker (MCB) based on the kilowatt size of the appliance:

• 1 kW: Use 6 Amp Breaker

• 2 kW: Use 10 Amp Breaker

• 4 kW: Use 20 Amp Breaker

• 10 kW: 32 - 63 Amp breakers are used (depending on system design)

3. Wire Size & Typical Usage

This section is very important for safe installation, specifying the size of the wire cross section (sq mm) and the appropriate equipment:

• 0.75 mm ² (6A): Suitable for LED light bulbs

• 1.0 mm ² (10A): Suitable for ceiling fans

• 1.5 mm ² (16A): Suitable for irons

• 2.5 mm ² (20A): Suitable for Air Conditioning (Air Conditioning)

• 4 mm ² (25A): Suitable for Water Heater (Geyser)

• 6 mm ² (32A): Suitable for main power outlet

• 10 mm ² (40A): Suitable for Main Line (Main Line) Home Entry

4. Electrical Wire Types

The last figure shows different types of wire structure patterns, such as:

• Single Core: Single Core Cable (Rigid)

• Multi Core: Multi Core Cable

• Flexible Wire: A soft wire that bends easily.

• Armored Cable: Armored cable (used for earth embedding or where high durability is required)

• Coaxial Cable: Cables for TV or satellite signals Caution: These are preliminary guidelines. Actual electrical installations should be operated by a specialist electrician and must be referenced according to Thailand's electrical installation standards (such as the WAT standard) for maximum safety.