Switchboard earthing busbar

This post shows some pictures of the earthing busbar of a main switchboard. Click here to go back to the main post, Switchboard electrical earthing.
Photo 1 - View of the lower part of a main switchboard
You may be wondering why I did not stand back a little bit and take a wider view of the subswitchboard. The would give a nicer picture, right?
I however took this picture when the main

Temporary electrical switchboards

All electrical switchboards used on temporary electrical installations or building construction sites should be of substantial construction. Where they are installed in outdoor locations, the switchboards should be so constructed that safe operation is not impaired by the weather. This weatherproof criteria usually means an IP rating of not less than IP 65. When the doors are opened, the degree

Switchboard electrical earthing

Following is a picture showing the earthing busbar of a main switchboard. Below the picture is a simple performance specifications for the grounding of the switchboard.
The are also two more posts on switchboard installation check and switchboard electrical tests. The latter is a general list of tests and inspections that are usually required of a major switchboard such as main switchboards and

Switchboard electrical tests

The following electrical tests must be carried to all switchboards, sub-switchboards, main distribution boards and motor starter panels.A. Full type tests1) Full type tests shall be carried out in accordance with IEC 60439-1, IEC 60947-1, and IEC 60947-6-1. Certificates issued by approved independent testing laboratories shall be submitted to the Employer’s Representative.The type tests shall

Electrical MCB installation

MCB installation (miniature circuit breakers) in the distribution boards shall comply with IEC 60898-1. They shall be incorporated with overcurrent protection. Their selection for use shall match their operating characteristics.1. Type test certificates shall be produced for the MCB selected from international recognized testing laboratories.2. Performance criteriaa) Breaking capacityThe rated

Switchboard installation check

Switchboards are the switching centers of the low voltage distribution sytem. They are also the places where the control and protection system is located.

Photo 1 - A switchboard being unloaded from the transport at a construction site of a building project



Because of the importance of these equipment, all aspects of a switchboard installation need to be closely monitored. Even the loading