Electrical Connector Maintaining Wire Separation in Mixed Conduits

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Solution Overview

Problem

Current electrical connectors fail to maintain the required insulation thickness and separation between low voltage control/signal wires and line voltage wires within electrical junction boxes, posing a risk of electrical hazards such as fire or equipment damage.

Innovation Solution

A connector design that includes a housing with guides and jumpers to connect control conductors from conduits containing power conductors, ensuring the same insulation factor as line voltage wires and providing a minimum 0.25″ physical separation to comply with electrical codes, using insulating materials and conductive jumpers to secure the connection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If low voltage control wires and line voltage power wires are run in the same conduit to save cost, then cable installation cost is reduced, but electrical safety is compromised due to insufficient insulation thickness and separation

Engineering Contradiction:
Improvecable installation costVSAvoidelectrical safety
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The connector is divided into separate compartments or sections that physically separate low voltage control wires from line voltage power wires. Each compartment provides dedicated space for specific wire types, ensuring code-compliant separation while allowing both wire types to be installed through the same conduit.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The connector acts as an intermediary device between the conduit and the electrical connections. It provides the required insulation thickness and physical separation within its structure, mediating between the space-constrained conduit environment and the safety requirements for wire separation.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If insulation jacket is stripped off control conductors for splicing in junction boxes, then wire connection is enabled, but insulation thickness requirement cannot be satisfied

Engineering Contradiction:
Improvewire connection capabilityVSAvoidinsulation thickness compliance
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The connector is designed with pre-formed insulating barriers, dividers, or insulated contact points before the wire splicing operation. These pre-integrated insulating features ensure that when control conductors are stripped and spliced, the required insulation thickness and separation are automatically maintained by the connector structure itself.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The connector utilizes composite construction combining conductive materials for electrical connection with insulating materials for separation and protection. This composite structure allows simultaneous achievement of electrical connectivity and insulation requirements within the same component.

Inventive Principle:
Principle #40Composite materials

3Reliability

If physical separation of 0.25″ is maintained between control wires and power wires, then electrical code compliance is achieved, but connector complexity increases

Engineering Contradiction:
Improveelectrical code complianceVSAvoidconnector structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The connector merges multiple functions into a single integrated structure: wire guidance, physical separation, insulation provision, and electrical connection all occur within one component. This consolidation achieves code compliance without proportionally increasing complexity, as the separation and insulation features are built-in rather than added as separate elements.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS10559922B2Electrical connector for cables containing both power and control conductors
Publication Date: 2020.02.11 HUBBELL INC
  • US10559922B2 patent drawing
  • US10559922B2 patent drawing
  • US10559922B2 patent drawing

AI summary

A connector for connecting control conductors provided in conduits also containing power conductors, the connector including a first guide for receiving a first at least one control conductor provided in a first conduit also containing at least one power conductor, a second guide for receiving a second at least one control conductor provided in a second conduit also containing at least one power conductor, at least one jumper for electrically connecting the first at least one control conductor and the second at least one control conductor and a housing for containing the first guide, second guide and the at least one jumper.