When planning an electrical project, one of the most common questions professionals and homeowners ask is: "Can an ACWU90 cable be buried directly underground?" Choosing the right cable is crucial for safety, compliance, and long-term performance. In this guide, we'll explain everything you need to know about ACWU90 cables, why they are ideal for direct burial, how to install them correctly, and why Dongguan Greater Wire & Cable Co., Ltd. is your trusted supplier for high-quality ACWU90 solutions.
What is ACWU90 Cable?
ACWU90 is a CSA-approved armored cable designed for both indoor and outdoor applications. It features aluminum interlocked armor combined with cross-linked polyethylene (XLPE) insulation, making it highly resistant to moisture, corrosion, and mechanical damage.
Key features of ACWU90 cable:
- Direct burial ready – No need for additional conduit in most installations.
- Durable aluminum armor – Provides mechanical protection against impact and crushing.
- Moisture and corrosion resistance – Suitable for wet, damp, or dry locations.
- Temperature rating – Typically up to 90°C for continuous operation.
- Compliance – Meets CSA standards for industrial, commercial, and residential wiring.
Because of its rugged construction, ACWU90 is commonly used for outdoor lighting systems, service entrances, industrial plants, and underground power distribution.
Can ACWU90 Cable Be Buried Underground?
Yes – ACWU90 cable is specifically approved for direct burial.
This makes it one of the most cost-effective and practical solutions for underground electrical installations. Unlike other cables that require a protective conduit, ACWU90's aluminum armor serves as a built-in shield against environmental hazards such as soil pressure, rodents, and moisture.
When installed correctly, ACWU90 cable ensures:
- Long-lasting performance even in harsh underground conditions.
- Lower material and labor costs because conduit is not necessary.
- Compliance with Canadian Electrical Code (CEC) and local standards, giving you peace of mind for inspections and safety checks.
Installation Tips for Underground ACWU90 Cable
Proper installation is critical to ensure safety and maximize the cable's lifespan. Here are essential tips to follow:
Trench Depth
- Bury the cable at a depth of 18 to 24 inches (45–60 cm), depending on local code requirements.
- In high-traffic areas, deeper trenches or protective boards may be needed.
Bedding and Backfill
- Lay the cable on a smooth sand or fine gravel bed to prevent damage from sharp rocks.
- Backfill carefully with soft material before adding soil.
Separation from Other Utilities
- Maintain clear spacing between the cable and water, gas, or sewer lines to prevent interference or hazards.
Mark the Path
- Use warning tape or markers above the buried cable to prevent accidental digging damage later.
Local Code Compliance
- Always check local electrical codes and obtain permits before starting your project.
Common Mistakes to Avoid
Even though ACWU90 cable is robust and designed for direct burial, certain errors can lead to costly issues:
- Using the wrong cable type – Not all armored cables are approved for direct burial. Ensure you select genuine ACWU90.
- Incorrect trench depth – Shallow installation increases the risk of damage from frost or digging.
- Skipping markers or warning tape – This can lead to accidental cuts during future landscaping or construction.
- Ignoring permits or code requirements – Non-compliant work may fail inspections or create safety hazards.
Avoiding these mistakes helps protect both your investment and the safety of your electrical system.
Why Choose Our ACWU90 Cable
At Dongguan Greater Wire & Cable Co., Ltd., we specialize in providing premium-quality ACWU90 cables that meet rigorous CSA standards. Whether you're handling a small residential project or a large-scale industrial installation, we offer:
Full project support – Our professional pre-sales and after-sales teams provide technical guidance and troubleshooting for any project size.
Reliable supply chain – Consistent inventory and fast delivery to keep your project on schedule.
Competitive pricing – High-quality products at cost-effective rates to maximize your budget.
Customized solutions – We can tailor specifications to meet your unique installation requirements.
When you choose our ACWU90 cable, you're not just buying a product - you're gaining a trusted partner dedicated to your project's success.
Contact us today for a consultation or bulk order inquiry:
Company: Dongguan Greater Wire & Cable Co., Ltd.
Tel / WhatsApp / WeChat: +86 135 1078 4550 / +86 136 6257 9592
Email: manager01@greaterwire.com