Halex 3/8-inch Flexible Metal Conduit (FMC) Combination Clamp Connector

1. Product Overview

The Halex 3/8-inch Combination Clamp Connector, Model 20570, is designed for securely connecting various types of electrical cables to a steel outlet box or other metal enclosure. This connector is suitable for use with non-metallic sheathed cable, flexible metal conduit (FMC), metal clad (MC) cable, and armored cable.

Key features include:

• Versatile Connection: Connects multiple cable types to metal enclosures.
• Corrosion Resistance: Constructed with a zinc alloy body and locknut, and zinc-plated steel clamp and screws for enhanced durability.
• Ground Continuity: Features a reversible locknut designed to cut through protective coatings on boxes and enclosures, ensuring reliable ground continuity.
• Easy Installation: Equipped with Tri Drive screws compatible with Phillips, slotted, and square screwdrivers.
• Compliance: Meets UL and CSA requirements for safety and performance.

Image 1.1: Halex 3/8-inch Flexible Metal Conduit Combination Clamp Connector (Model 20570).

2. Safety Information

Always adhere to local electrical codes and safety regulations when installing electrical components. Improper installation can lead to electrical shock, fire, or other hazards. If you are unsure about any part of the installation process, consult a qualified electrician.

• Disconnect Power: Always ensure power to the circuit is turned off at the main breaker or fuse box before beginning any electrical work.
• Use Appropriate Tools: Use only insulated tools and personal protective equipment (PPE) as required.
• Inspect Components: Before installation, inspect the connector for any damage. Do not use damaged components.
• Secure Connections: Ensure all connections are tight and secure to prevent loose wiring and potential hazards.

3. Components Included

Each Halex 3/8-inch Combination Clamp Connector package typically includes the following:

• Combination Clamp Connector body
• Reversible Locknut
• Set Screws (Tri Drive compatible)

4. Installation Instructions

Follow these steps to properly install the Halex 3/8-inch Combination Clamp Connector:

1. Prepare the Cable: Strip the outer jacket of the cable (non-metallic sheathed, FMC, MC, or armored) according to the manufacturer's recommendations for the specific cable type, exposing the conductors and any necessary grounding wire.
2. Insert Cable into Connector: Slide the prepared end of the cable into the open end of the combination clamp connector. Ensure the cable is fully seated within the connector body.
3. Secure Cable: Tighten the set screws on the connector body using a Phillips, slotted, or square screwdriver. Ensure the screws are tightened firmly to secure the cable without overtightening, which could damage the cable.
4. Attach to Enclosure: Insert the threaded end of the connector through the appropriate knockout hole in the metal outlet box or enclosure.
5. Install Locknut: Thread the reversible locknut onto the connector from inside the enclosure. Tighten the locknut firmly. The design of the locknut allows it to cut through paint or other protective coatings on the enclosure, ensuring a good electrical ground connection.
6. Verify Connection: Once installed, gently tug on the cable to ensure it is securely held by the connector and that the connector is firmly attached to the enclosure.

5. Operating Instructions

The Halex Combination Clamp Connector is a passive component. Once correctly installed, its primary function is to provide a secure and grounded connection for electrical cables entering a metal enclosure. No ongoing operational steps are required beyond initial installation.

• The connector maintains the physical integrity of the cable entry point.
• The reversible locknut ensures electrical continuity to ground through the metal enclosure.

6. Maintenance

Minimal maintenance is required for this product. Periodic inspection is recommended to ensure the integrity of the electrical system.

• Visual Inspection: Periodically check the connector and cable entry point for any signs of physical damage, corrosion, or loosening.
• Tightness Check: If accessible and safe to do so (with power disconnected), verify that the set screws and locknut remain tight.
• Cleaning: Keep the area around electrical connections clean and free from dust or debris.

7. Troubleshooting

If issues arise, consider the following common troubleshooting steps:

• Loose Connection: If the cable feels loose or the connector is not firmly attached to the enclosure, ensure power is off and re-tighten the set screws and locknut.
• No Ground Continuity: If ground continuity is suspected to be an issue, ensure the locknut is fully tightened and has properly cut through any paint or coating on the enclosure. Clean any corrosion if present.
• Cable Damage: If the cable itself appears damaged at the entry point, replace the cable and/or connector as necessary.

For persistent issues or complex electrical problems, consult a qualified electrician.

8. Specifications

Image 8.1: Approximate dimensions of the Halex 3/8-inch Combination Clamp Connector.

9. Warranty and Support

For specific warranty information, please refer to the packaging or contact Halex directly. Halex products are manufactured to high standards, and support is available for product-related inquiries.

• Manufacturer: Jensen (Home Improvement)
• Brand: Halex
• Contact: Please visit the official Halex website or refer to the product packaging for customer support contact details.