## Interior and Exterior Lighting Installation Method Statement

Below method statement covers installation and connection of all interior and exterior lighting, lighting control devices and wiring devices according to the approved shop drawings, project specifications and other related codes. One of the purpose of this method statement is to coordinate the exact location and position of all lighting fixtures, switches, outlet boxes and… Read More »

## Spontaneous Magnetism / Magnetization

Spontaneous magnetization is the appearance of an ordered spin state (magnetization) at zero applied magnetic field in a ferromagnetic or ferrimagnetic material below acritical point called the Curie temperature or TC. Heated to temperatures above TC, ferromagnetic materials become paramagnetic and their magnetic behavior is dominated by spin waves or magnons, which are bosoncollective excitations… Read More »

## Power & Voltage Distribution Systems – Components Introduction

Distributions systems represent an important parts in the electrical grids and for this reasons the electrical generation & distribution companies delicate approximately 40% of the capital investment for distribution systems while the remaining is given to generation and transmission (40% generation & 20% transmission). The power distribution system is particularly important for an electrical utility… Read More »

## Uninterruptible UPS Power Supply System Installation Testing & Commissioning Method Statement

Below document covers the uninterruptible power supply UPS system installation, testing and commissioning method statement. Before starting the UPS installation work, user manual must be thoroughly read and understood. Applicable safety instructions and warnings must be discussed and appropriate measures must be taken. It is strictly recommended that trained service engineer from manufacturer or authorised… Read More »

## Electric Current Electric Charge & Electromagnetism

Very basic question which an electrical student or professional may be asked is what is electric current and electric charge. The electric current is actually the flow of electric charge from one point to other point of the conductor or wire or cable. In electric circuits this charge is often carried by moving electrons in a… Read More »

## Curie Weiss Law & Curie Constant

In a paramagnetic material the magnetization of the material is (approximately) directly proportional to an applied magnetic field. However, if the material is heated, this proportionality is reduced; for a fixed value of the field, the magnetization is (approximately) inversely proportional to temperature. This fact is encapsulated by Curie’s law: where is the resulting magnetisation… Read More »