Electrical Testing and Commissioning General Requirements & Checklists

All electrical checks and tests shall be conducted as per the manufacturer’s drawings/manuals, relevant codes of installation and below given commissioning check lists. The electrical installer/contractor shall also carry out additional tests if called for in the project electrical specifications. Contractor shall carry out insulation resistance tests by meggers of following rating. (a) Control circuits… Read More »

Technical Requirements for Lighting System Installation Work

The lighting system installation work shall cover the supply and installation of lighting system equipment such as Main lighting distribution boards (MLDBs), lighting distribution boards (LDBs), receptacles, light control switches, ceiling fans, lighting wires, conduits, junction boxes, lighting poles, towers, etc. Lighting company shall carry out the installation of various lighting equipment as indicated in… Read More »

Method Statement for Underground Earthing Works

This method is to describe the minimum requirements for earthing conductor installation including materials receiving, storing, and installation. The electrical procedure will ensure that the requirements of underground earthing installation works are met in accordance to the codes requirements and contract specifications. Procedure will also make sure that the electrical works are carried out in… Read More »

Octal Number System | Octal to Decimal Binary & Hexadecimal Conversion

The Octal Number System is another type of computer and digital base number system. Octal Number System is very similar in principle to the previous hexadecimal numbering system except that in Octal, a binary number is divided up into groups of only 3 bits, with each group or set of bits having a distinct value… Read More »

Earthing System Concept Components and Types

All the people living or working in residential, commercial and industrial installations, particularly the operators and personnel who are in close operation and contact with electrical systems and machineries, should essentially be protected against possible electrification. To achieve this protection, earthing system of an installation is defined, designed and installed according to the standard requirements.… Read More »

Circuit Breaker Types by Interrupting Medium Class

On this page you can find information about the circuit breaker types or classification by the interrupting medium used i.e. oil, air, vacuum or gas etc. Oil Circuit Breakers Oil has an excellent dielectric strength which enables itself not only to be used as an interrupting medium but also as insulation within the live parts.… Read More »