All you need to know about Electrical Prefabrication

All you need to know about Electrical Prefabrication


Although the prefabrication strategies have been utilized for quite a long time in the construction business, they are new to the electrical business. Modular construction, which intends to develop ahead of time, is the act of connecting components in a stockroom and delivering finished or partially finished units to a building site for installations. Working in a controlled situation includes an incentive from various perspectives and expands wellbeing of workers by restricting work in elevated zones.

As electrical contractual workers look for better approaches to expand efficiency, some are starting to create pre-assembled electrical frameworks to speed up installations and increase their capacity to take on increasingly advanced and complex projects. Electrical prefabrication incorporates a wide assortment of parts from switches and receptacles to inside floor and wall equipment.

Electrical Prefabrication is a result of good project planning. The concept of prefabrication can succeed or fail depending upon the quality of shop drawings and information you have with you. While pre-fabricated components need not be restricted with just small item, you should be extremely sure of what you’re doing with regards to bigger parts. Any mistake or partial specification or drawings could mislead your project course.

Many companies are integrating prefabricated electrical components, for example, panel builds and lighting bundles into modular data centre skids, built by construction firms. Influences include factors like, green structure initiatives and endeavours to improve waste management on construction sites.


Installation Efficiency Increases: Electrical assemblies are worked upon with precise specifications, so once they are pre-assembled and conveyed nearby, they basically should be connected with the electrical supply to begin working, exceptionally expanding effectiveness and efficiency. This likewise restricts lost time recovering forgotten instruments and materials since a large portion of the work is already complete.

Diminished Labour Costs and Less Material Handling: By performing monotonous installations your group requires less time, sparing you work costs. The need for licensed electricians on site reduces thus increasing productivity as they do not have to work on dangerous sites. Moreover, the task will require less prefab workers in the field bringing about a major decrease in labour costs and improved productivity. There’s likewise a huge savings on labour, which can be over the top expensive and in limited supply. The prefabrication process is viewed as more of a manufacturing function so the contractors can make progress with less specialists. The workshop can utilize semi-talented labours, unlike a building site where electrician is required to do the installations at the construction site. Prefabrication dispenses superfluous material handling on construction sites. In customary construction process, materials are moved from room to room as individual assemblies are made.

Quicker Turnaround Time and Better Quality: With completed Shop Drawings, equipment can be pre-assembled before the structure is even built, which can shorten the project schedule. Prefabs provides on-site, off-site and other hidden advantages. For example, quicker establishment at the place of work lessens the task term. Prefabs have the capability of cutting the installation time by a half. Less materials and less activity at a place of work imply that the project is finished quicker with a diminished possibility for mishaps and deferrals. What’s more, by delivering all the individual parts to the workshop for assembly, the degree of material handling is limited. This means an easy to manage supply chain. Less materials reduce clutter, reduce waste, and the requirement for additional space for storage. Prefabrications allows us to eliminate the negative effect of weather by prefabricating in a controlled environment leading to higher quality output.

BIM & Prefab

BIM can definitely improve a contractor’s worker’s prefab system. It improves building design abilities and helps avoiding onsite work clashes that could fundamentally lessen profitability.

BIM Service Providers are essential forcontractual workers to turn out to be best-of-class prefabricators as it empowers organizations to theoretically pre-assemble an entire structure’s electrical distribution framework from its three-dimensional drawings.

The data offered by BIM not just empowers the contractual worker to prefab all the essential electrical segments for the project, yet to be guaranteed that the conveyance and installations are precise

BIM has enhanced the ability to prefabricate electrical assemblies for installation. The greatest value from the BIM model is the ability to visualize the system in 3-D. Using this visualization capabilities of the BIM model allows detailers to group the electrical components and determine suitable assemblies for prefabrication. This process is more beneficial than using traditional hand or 2-D CAD drawings In addition, using the electronic BIM model documents dimensions that can be validated much easier and upshots confidence and accuracy, allowing for more prefabrication than in the past.

What can be prefabricated?

Electrical construction covers a wide scope of frameworks, from switching and power device assemblies to branch-circuit wiring and pre-wired boards. These permit the contractual worker to manufacture raceways, metal clad cables, wire packaging, panel board and transformer congregations. Indeed, even raceway support assemblies, duct bank assemblies, and structural steel assembles may be prefabricated.

Electrical prefabrication includes different prefabs which includes lighting fixtures, hanger cables, conduit bends, outlet boxes, electric box assemblies, precut wires, and precut racks for channel runs. Various other electrical prefabs exist.

Below are the 2 common prefab assemblies:

  • Prefab lighting

This includes assembling and overhauling the lighting fixtures at the electrical contractor’s workshop – for quick and simple installation at site. Earlier fabrication included activities like pre-wiring, adding sensors, whips, and mountings. Electrical prefabs give prominent authority over the lighting products. They comfort the installation processes at a construction sites.

  • Prefab underground duct banks

In certain installations, like ventilation work, which requires shutting the street to lay the underground conductors, the conventional technique is tedious. It is also inconvenient since it involves working in shifts, weekends and at night. The installations of pre-assembled conduit banks is more secure and increasingly effective.  In addition, it reduces the time for street closer.


Some report shows that worldwide construction waste is anticipated to double by 2025 – while it recommends that the UK and Europe presently lead the route for construction waste efficiencies, however, there is always an opportunity to be better. We may see more incentive for organizations to go to prefabrication if we have strict rules for waste management. MEP and HVAC BIM Modeling Services allows 3D visualization of BIM model and helps to fabricate electrical components accurately.

All in all, utilization of prefab construction is moderately new to the electrical field, yet it is getting on rapidly. We hope to see it developing as organizations look for better efficiencies.

  • Divya Dave
    Divya Dave

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