When it comes to electrical wiring, choosing the right armored cable is critical for safety, compliance, and long-term performance. Many electricians, contractors, and homeowners often ask the same question: "Is AC90 cable the same as BX?"
The short answer is no - while the two may seem similar at first glance, they have distinct differences in design, code compliance, and applications.
In this article, we'll break down what AC90 and BX cables are, explore their key differences, and help you decide which one is right for your project.
What is AC90 Cable?
AC90 cable is a modern armored electrical cable widely used in residential, commercial, and industrial wiring.
It consists of copper conductors, insulated wires, and a flexible aluminum armor that provides physical protection and acts as a grounding path.
Key Features of AC90 Cable:
- Standards Compliance: AC90 meets CSA (Canadian Standards Association) and UL (Underwriters Laboratories) certifications, making it fully compliant with modern electrical codes.
- Durability: Its armored design protects against mechanical damage, making it ideal for exposed installations.
- Ease of Installation: Lightweight and flexible for quick wiring, even in tight spaces.
Applications:
- Residential wiring
- Commercial lighting and power systems
- Industrial machinery and control systems
AC90 is considered the standard choice for modern electrical installations thanks to its safety, versatility, and regulatory compliance.
What is BX Cable?
BX cable is a term historically used to describe early versions of armored cable.
It was first introduced in the early 1900s by General Electric and was commonly used in residential and commercial buildings for many decades.
Characteristics of BX Cable:
- Construction: A spiral metal armor (usually steel or aluminum) surrounding insulated wires.
- Grounding: Older BX cables often lacked a dedicated grounding conductor, relying on the metal sheath for grounding - a practice that no longer meets modern safety codes.
Applications:
- Commonly found in older homes or buildings
- Previously used for lighting circuits and outlets
Today, the term "BX" is outdated. Modern equivalents, like AC90 or MC cables, are now used because they meet current safety and performance standards.
AC90 vs. BX: Key Differences
While both are armored cables, AC90 and BX are not identical. Below is a clear comparison:
| Feature | AC90 Cable | BX Cable |
|---|---|---|
| Definition | Modern armored cable meeting CSA/UL standards | Outdated type of armored cable |
| Grounding Method | Dedicated bonding strip or grounding conductor | Relies on outer sheath for grounding |
| Code Compliance | Fully compliant with NEC/CEC | Often non-compliant with modern codes |
| Safety | Safer, more reliable | Less reliable, potential safety hazards |
| Current Use | Widely used in modern construction | Mostly found in older buildings |
Summary of Key Differences:
- Safety: AC90 has a dedicated ground, making it far safer than older BX cables.
- Compliance: AC90 meets modern codes like NEC and CEC, while BX does not.
- Future-Proofing: AC90 is the preferred choice for new builds and upgrades.
Can AC90 and BX Be Used Interchangeably?
In most cases, no, AC90 and BX cannot be swapped interchangeably.
- Older BX cables may need to be replaced entirely during renovations to comply with modern safety standards.
- Building inspectors and electrical codes typically require upgrading to AC90 or MC cables when doing any significant rewiring.
- Always consult a licensed electrician to ensure compliance with local regulations before replacing or mixing cable types.
When to Choose AC90 Cable
Choosing AC90 is ideal for projects that require safety, efficiency, and code compliance.
Recommended Scenarios:
- New Construction: Residential homes, commercial buildings, and industrial facilities.
- Upgrading Old Wiring: Replace outdated BX to meet modern safety codes.
- High-Durability Applications: Environments where cables are exposed to potential physical damage.
- Regulatory Compliance: Projects that must strictly follow CSA or NEC standards.
By using AC90, you ensure that your electrical system is future-proof, safe, and reliable.
Why Choose Dongguan Greater Wire & Cable Co., Ltd. for AC90 Cables
At Dongguan Greater Wire & Cable Co., Ltd., we are proud to be a leading supplier of high-quality AC90 cables.
Whether you are handling a small residential job or a large-scale industrial project, we provide the expertise, products, and support you need.
Our Advantages:
- Comprehensive Product Range: High-performance AC90 cables for all applications.
- Technical Support: A professional pre-sales and after-sales team to assist with product selection, installation guidance, and troubleshooting.
- Global Service: Fast response and worldwide shipping to meet project timelines.
- Quality Assurance: All products meet strict CSA and UL certification standards.
Contact Us Today
Upgrade your project with reliable, code-compliant AC90 cables.
Reach out to our team for expert advice, competitive pricing, and unmatched service.
Dongguan Greater Wire & Cable Co., Ltd.
📞 Tel/WhatsApp/WeChat:
+86 135 1078 4550 / +86 136 6257 9592
📧 Email: manager01@greaterwire.com
No matter the size of your project, we are ready to deliver the best products and technical support to help you succeed.