Prefabricated Electrical Module for Early Stud-Bay Installation
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Solution Overview
Problem
Construction of multi-unit buildings faces significant logistical challenges, including delayed electrical installations due to the need for a weatherproof building envelope, leading to increased labor costs, time delays, and inconsistent installations.
Innovation Solution
A prefabricated electrical module that includes a circuit breaker panel casing with pre-connected homerun wiring, protected by a guard cover, allowing early installation into stud bays before the building is dried-in, and using a drill-powered winch for lifting, ensuring consistent and efficient electrical installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional electrical installation methods are used, then electrical systems can be installed, but installation can only begin after the building is dried-in, causing time delays
Solution Approach 1:
The electrical installation system is segmented into modular electrical assemblies that can be installed independently in stud bays before the building envelope is complete. Each assembly contains circuit breakers, wiring, and protective enclosures as separate installable units, allowing electrical work to proceed parallel to other construction activities without waiting for dry-in.
Solution Approach 2:
Electrical assemblies are prepared and protected in advance with weather-resistant enclosures and sealed configurations before installation. The modular units are pre-assembled with all necessary electrical components and protected against moisture exposure, enabling them to be installed early in the construction process before the building is dried-in.
2Productivity
If electrical installation waits for dry-in, then moisture protection is ensured, but labor costs and construction time increase
Solution Approach 1:
The electrical system is divided into standardized modular assemblies that simplify installation. Each module contains pre-organized circuit breakers, wiring, and enclosures that can be quickly installed as complete units, reducing on-site labor complexity and enabling faster installation by smaller crews.
Solution Approach 2:
All electrical components are pre-assembled, pre-wired, and pre-protected into complete modular units before arrival at the construction site. This preliminary preparation eliminates complex on-site wiring and assembly tasks, allowing rapid installation once the building structure is in place.
3Manufacturing precision
If multiple electricians perform electrical installation, then installation can be completed, but installation consistency and quality control decrease
Solution Approach 1:
The electrical system is standardized into identical or similar modular assemblies that all follow the same configuration and installation procedure. This standardization ensures that regardless of which electrician installs which module, the quality and consistency remain uniform across the entire building.
Solution Approach 2:
All electrical assemblies are pre-configured and pre-tested during manufacturing with standardized wiring patterns, circuit breaker arrangements, and connection points. This preliminary standardization eliminates variability introduced by different installers and ensures consistent quality control.
Data Source
AI summary
A prefabricated electrical module and system along with fabrication and installation methods are provided. The prefab electrical module includes a circuit breaker panel casing that houses multiple circuit breakers, and a chase extending upwardly from the panel casing that stows coiled lengths of homerun wiring attached to the circuit breakers. During transport, a temporary panel casing front cover protects the panel casing front, and a forwardly protruding guard cover with an upwardly projecting hoisting handle shields the front and top of the chase and wiring. During installation, a hoisting bracket is attached at the top of the stud bay into which the prefab electrical module will be installed. A drill-powered winch is then used to lift the module to the proper height in the bay. The panel casing, chase, wiring, and breakers remain in the wall. The hoisting bracket, temporary panel casing front cover, guard cover, drill, and winch are reusable.