The Ultimate Guide to Cable Cleats for Cable Tray Systems
Why Are Cable Cleats Essential for Cable Tray Systems?
Cable cleats are critical components used to securely fasten and support electrical cables laid in cable trays. They protect cables from mechanical damage, maintain system integrity during short circuits, and ensure compliance with safety standards like IEC 61914. For industrial applications, trusted providers such as North American Sales Company offer high-performance cleats designed for durability, safety, and code compliance.
Introduction: Small Components, Big Impact
In complex electrical installations, cable trays form the foundation of organized cable management. But it’s the cable cleats that ensure those cables stay safe, secure, and functional under all conditions. Whether you're working in a commercial building or an offshore platform, choosing the right cable cleats for cable tray systems can make a measurable difference in long-term performance and safety.
What Are Cable Cleats and Why Are They Used?
Cable cleats are mechanical devices that clamp and secure electrical cables in position on a cable tray. Their main functions include:
Preventing cable movement from fault currents
Reducing wear and tear from vibration and environmental stress
Helping maintain safe spacing between cables
Ensuring compliance with international electrical standards
When Do You Need Cable Cleats in Tray Systems?
You should install cleats in any tray-based system where:
Cables carry medium to high voltage
There’s a risk of short circuits
Systems are installed in industrial or outdoor environments
Safety and compliance standards (IEC 61914) must be me
Types of Cable Cleats for Cable Tray Systems
1. Trefoil Cable Cleats
Used when three single-core cables are installed in a trefoil formation. Ideal for managing electromagnetic forces in high-voltage systems.
2. Single Cable Cleats
Secure individual power cables and are common in flat installations or low-voltage systems.
3. Two-Bolt and One-Bolt Cleats
These offer varying levels of mechanical strength. Two-bolt cleats provide extra stability for heavy-duty industrial applications.
4. Flame-Retardant and Fire-Rated Cleats
Designed for fire-critical environments such as tunnels or substations, where cable integrity must be maintained during a fire.
How to Choose the Right Cable Cleats
Choosing the correct cleats isn’t just about matching sizes. Here are critical considerations:
✔ Match Cleat Type to Cable Formation
- Trefoil cleats for trefoil cable layouts
- Single or two-bolt cleats for flat-laid cables
✔ Consider Short-Circuit Performance
Ensure cleats are short-circuit tested to IEC 61914. This guarantees they can withstand electromagnetic forces during a fault.
✔ Evaluate Environmental Conditions
For outdoor use, choose UV-stabilized cleats
In corrosive environments, stainless steel or corrosion-resistant coatings are preferred
✔ Material Matters
Polymer cleats: Lightweight and corrosion-resistant
Metal cleats: Provide maximum strength for high-voltage system
Installation Guidelines for Tray Systems
Here’s a basic checklist to follow:
- Measure Cable Diameter – Cleats must fit snugly without compressing insulation
- Check Spacing Requirements – Spacing is based on short-circuit withstand; refer to the manufacturer’s chart
- Use Compatible Fixings – Mount cleats securely to ladder, perforated, or solid trays
- Inspect After Faults or Maintenance – Ensure cleats remain tight and undamaged
For ease and reliability, installers across North America trust products offered by North American Sales Company, including Ellis cable cleats, known for innovation and global compliance.
Real-World Example: Utility Substation Upgrade
A utility company upgrading a substation selected trefoil cable cleats for its HV feeder system. They used fire-rated, stainless steel cleats from North American Sales Company to handle high fault currents and meet strict fire regulations. Post-installation tests confirmed minimal cable movement during simulated fault conditions, saving potential rework and ensuring uninterrupted power delivery.
Benefits of Using the Right Cleats in Tray Systems
✅ Reduced maintenance
✅ Increased system safety and reliability
✅ Compliance with NEC and IEC standards
✅ Enhanced cable lifespan
✅ Improved organization and aesthetics
Why Choose North American Sales Company for Cable Cleats?
With over 30 years of experience in the electrical industry, North American Sales Company offers trusted solutions for demanding projects. Their range includes:
Heavy-duty Ellis cable cleats
UV and fire-resistant cleats
Cable cleats tested to IEC 61914
Expert support for system design and product selection
FAQs – Cable Cleats for Cable Tray Systems
Q1: How often should cable cleats be spaced along the tray?
Spacing depends on the fault current rating and cable size. Refer to manufacturer guidelines (e.g., Ellis) for precise recommendations.
Q2: Are cable cleats required by electrical codes?
Yes. IEC 61914 and many national codes require cable restraint for short-circuit protection in medium to high-voltage systems.
Q3: Can I use the same cleats for indoor and outdoor installations?
Not always. Outdoor installations should use UV-resistant cleats, while corrosive or wet environments may require stainless steel cleats.
Q4: What makes Ellis cable cleats stand out?
Ellis cleats are extensively tested, compliant with global standards, and offer innovative designs like tool-free installation, making them ideal for demanding tray systems.
Final Thoughts
Investing in high-quality cable cleats for cable tray systems is more than a safety decision—it’s a smart move for performance, reliability, and code compliance. Whether you’re securing a substation, data center, or industrial facility, always partner with trusted suppliers like North American Sales Company to ensure your cleats meet the demands of your application.
