Segmented Service Entrance Head for Wire-Through Installation
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Solution Overview
Problem
Existing service entrance head designs require severing or disconnecting the service wires to install or replace the head, necessitating multiple visits by utilities and complex rewiring processes.
Innovation Solution
The improved service entrance head features a sectioned mounting collar and multi-piece insulator that can be assembled and disassembled without severing the wires, allowing for installation or replacement without disconnecting the service, using separable sections and adjustable openings to accommodate different wire sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional service entrance head with a continuous collar is used, then the device provides a complete seal and structural support, but the service wires must be severed or disconnected to install or replace the head
Solution Approach 1:
The collar is divided into multiple separable sections that can be independently assembled and disassembled. This segmentation allows the collar to be opened and closed around existing service wires without requiring the wires to be severed, while still providing a complete seal when assembled. The sections can be attached to each other using fasteners or interlocking mechanisms.
Solution Approach 2:
The collar transitions from a static, continuous structure to a dynamic, adjustable structure that can open and close. This allows the collar to adapt to existing wire configurations during installation and replacement, enabling maintenance operations without service disruption while maintaining structural integrity during operation.
2Ease of manufacture
If service wires are severed to install a traditional service entrance head, then the head can be properly installed, but multiple utility visits and complex rewiring are required
Solution Approach 1:
The collar is pre-configured with separable sections and attachment mechanisms that enable direct installation around existing wires. This preliminary design allows installers to skip the time-consuming steps of severing wires, coordinating multiple utility visits, and complex rewiring operations, significantly reducing installation time while maintaining proper installation quality.
3Strength
If a fixed-size collar is used, then the structure is simple and robust, but it cannot accommodate different wire sizes or service configurations
Solution Approach 1:
The collar is divided into multiple sections that can be independently adjusted in size or configuration. This segmentation allows the collar to accommodate different wire sizes and service configurations while maintaining structural robustness through the interlocking sections and support mechanisms.
Solution Approach 2:
The separable collar design creates a universal interface that can accommodate various wire sizes, types, and service configurations. The same collar structure can be adapted to different installation scenarios, making the device versatile while maintaining structural integrity through standardized attachment mechanisms.
Data Source
AI summary
An improved service entrance head including (a) a cap, (b) a cap support or collar adapted for mounting to a service conduit, and (d) an insulating service wire support or wire separator, that allows for replacement of an installed service entrance head with the service passing through the collar and separator without requiring that an end of the service be available. Both the collar and the wire separator may be segmented so that they can be removed from a position surrounding the service and reassembled around the service. Alternatively, both the collar and the insulating support/separator may have a gap through which the service may be inserted into the desired interior position. Methods of installation are disclosed.