Electrical cable ladder pictures

Below is a picture of cable ladder installation. I only have time for this picture today, but you will be able to see more installation pictures of this component of electrical installations soon. However, you can see more pictures of electrical installations in my other posts on this blog by visiting this anchor post, Free electric installation pictures. You can also see cable tray pictures at

Emergency light installation pics

I have uploaded few pictures showing the method of installing a ceiling-recessed emergency lighting (EL) unit. This work was photographs at a high-rise building construction a few months ago.

As far as the choice of types of the EL light, I would personally prefer a surface mounted self-contained type. The one being installed in this picture is also a battery-backed self-contain type, but it is

Hospital LV electrical installation

The low voltage (LV) electrical installation for a hospital is designed based on the size and complexities of the hospital to be constructed. A small hospital would only require simpler design similar to other types of electrical works in buildings.However for large hospitals, or hospitals with sophisticated equipment to be installed, the electrical installation will become more complex because

Electrical DB pictures

I have uploaded below a few pictures of electrical DB being installed at a high-rise office-building project. I only have enough time for these few pictures today, but I will be sending a more detailed post on the DB installation soon. Plus a few more of the DB pictures maybe.In the meantime, if you have the time, check out the following link. It is a link on how to convert your car into an

How to install fire stops

The following provides sample specifications and it presents a guide on how to install fire stops inside buildings. During the installation work of electrical services inside buildings especially cables, cable sleeves, cable trays, conduit and trunking, walls and floors often need to be penetrated to allow for the route of these components to pass through.After installation of a wiring trunking

Electrical generator site tests

Upon completion of the site installation work for the standby electrical generator, the generator should be tested again to ensure that it is working properly. There are always some possibilities that some damages have occurred to the electrical generator during transporting process including loading and unloading. Also some damages may have happened during the storage at the construction site

Temporary site floodlights

Large construction sites usually need temporary floodlight towers (in addition to the temporary lighting inside the new buildings) to provide lighting efficiently for the general movement, safety and security on the external areas of buildings under construction.

xxxxxxx RELATED PICTURES: High mast flood lighting | Temporary lighting installation xxxxxx

The lighting towers will usually takes

Temporary electric supply

What is a temporary electric supply?A temporary electric supply is normally associated with the temporary electrical installation of a construction site. The term ‘temporary’ brings up a vision of a length of a length of twin and earth cable, or a four-core twisted cable and an undersized green earth wire, that is connected into a 30A single or 4-phase and neutral switch-fuse, trailing across the

Schools electrical installation

Electrical installation design for schools should be simple and economical. It must also be practical and functional.Among the educational buildings, primary and secondary school buildings are the most common. Yet their numbers are still insufficient to cater for the high increase of enrollment throughout the country.The construction of new school building by the education ministry has been

Light switches installation

The installation of light switches and other electrical parts need to take into consideration a number of factors. For light switches, the following requirements must be incorporated into the design drawings and the specifications.1) The grouping of lighting luminaries into single control should be done in small groups or on individual luminaries. This should be arranged in such a way that

Emergency lights installation

The installation of self contained emergency lights is a statutory requirement in most countries. They need to be provided at strategic places throughout the building in order to aid the evacuation of the building occupants out of the building in the event of failure o the mains supply.

The need for these emergency lighting is real even during daytime because some internal corridors inside the

Electrical MCCB installation

This section lays out the major performance requirements for the MCCB (moulded-case electrical circuit breakers) installation inside switchboards.All moulded-case circuit breakers shall comply with IEC 60947-2.All electrical MCCB shall be of moulded insulating material of good mechanical strength and non-tracking properties. The tripping mechanisms shall be calibrated in compliance with IEC

Electrical DB wiring

Following is a sample specifications for the wiring of an electrical DB. Refer the section on Electrical DB installation for specification details on the construction of distribution boards.

Photo 1 - Internal wiring of an electrical DB

Terminals for external conductors All conductor terminals shall be suitable for copper conductors.

All cable termination assemblies shall have facilities for

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

Socket outlets and switch installation

The following materials can be used as a performance specification for installation of socket outlets and switches in multi-storey office buildings. I will also add some pictures of actual installations of these devices in future, and may be also some drawings and diagrams. Come back and check out this post every few weeks.

Photo 1 – A switch center at a small meeting room


UPDATE March 16,

Cable trays and ladder installation

I have uploaded a few pictures and a diagram on the installation of electrical cable trays and cable ladders for those who have some need for them. At the end of these pictures, you will also find a sample specification for the cable tray and cable ladder installations in multi-storey office buildings. If you wish to see more photos of electrical installations, this post, Free electric