If you've ever handled armored electrical cables in Canada, chances are you've come across AC90 wire. It's one of the most common armored cables used in both residential and industrial wiring.
But here's the real question - how do you identify AC90 wires correctly and safely?
In this guide, we'll walk you through what AC90 wire is, how to spot it, and why accurate identification matters for safety, compliance, and performance.
What Is AC90 Wire?
AC90 (Armored Cable 90°C) is a type of aluminum interlocked armored cable approved under the Canadian Electrical Code (CEC). It's designed for dry locations and indoor installations where additional mechanical protection is needed.
Here's what makes AC90 unique compared to other cables:
| Feature | Description |
|---|---|
| Armor Type | Aluminum interlocked armor (spiral pattern) |
| Bonding Strip | Bare aluminum bonding strip under armor |
| Conductor Insulation | PVC or XLPE rated up to 90°C |
| Voltage Rating | Typically 600V |
| Common Use | Branch circuits, lighting, power distribution in dry locations |
In short: AC90 is tough, reliable, and easy to install - which is why it's widely used in both commercial and industrial wiring systems.
Why Proper Identification Matters
Identifying AC90 correctly isn't just about knowing your cables - it's about safety and compliance.
Here's why it's so important:
✅ Code Compliance: Canadian Electrical Code (CEC) requires correct cable type for specific applications.
⚡ Grounding and Bonding: The bonding strip is essential for proper grounding.
🔧 Installation Accuracy: Misidentifying AC90 as ACWU90 or Teck90 could lead to improper installations.
💡 Long-Term Reliability: Using the right cable ensures consistent performance and fewer failures.
Pro Tip: AC90 is suitable for dry locations only - if your installation is exposed to moisture, you'll need ACWU90 instead.
How to Identify AC90 Wires (Step-by-Step)
Recognizing AC90 is easy once you know what to look for. Follow these simple steps:
Step 1: Read the Armor Markings
Every AC90 cable has embossed or printed markings on its armor.
You'll typically see something like:
AC90 3C#12 AWG CU 600V 90°C DRY LOCATIONS
This label confirms:
- Cable type (AC90)
- Number and size of conductors (#12 AWG)
- Material (Copper or Aluminum)
- Voltage rating and temperature limit
Step 2: Examine the Armor
The armor is silver-colored aluminum, interlocked in a spiral pattern.
It's flexible yet strong, designed to protect the conductors inside.
If the armor looks steel-gray or coated in PVC, you may be dealing with another type (like ACWU90 or Teck90).
Step 3: Look for the Bonding Strip
Under the armor, you'll find a bare aluminum bonding strip - this is a signature feature of AC90.
It serves as a grounding path, ensuring electrical safety and meeting CEC requirements.
Step 4: Check the Conductor Insulation
Inside, each conductor is covered with PVC or XLPE insulation, typically color-coded for identification (black, red, blue, white, or green).
You'll also find 90°C printed on the insulation, indicating its thermal rating.
| Conductor Color | Function |
|---|---|
| Black / Red / Blue | Hot wires |
| White | Neutral |
| Green / Bare | Ground |
Common Mistakes When Identifying AC90
Even experienced electricians can make these common errors:
❌ Confusing AC90 with ACWU90 – the latter has an additional waterproof PVC jacket.
❌ Ignoring worn or faded armor markings.
❌ Overlooking the bonding strip.
❌ Using AC90 outdoors or in wet locations (not allowed).
Remember: If your cable has a black PVC jacket - it's not AC90.
Tools & Tips for Accurate Identification
To identify AC90 safely and efficiently, keep these tools handy:
| Tool | Purpose |
|---|---|
| Flashlight | Helps locate small embossed markings |
| Magnifying glass | Makes reading labels easier |
| Caliper | Measures cable diameter and conductor size |
| Manufacturer datasheets | Confirms specifications and compliance |
Expert tip: Always verify cable markings against official datasheets from trusted manufacturers like Greater Wire & Cable, Nexans, or Southwire.
Why Choose Dongguan Greater Wire & Cable Co., Ltd.
At Dongguan Greater Wire & Cable Co., Ltd., we take pride in being a trusted manufacturer and supplier of high-quality AC90 cables and other armored wire solutions.
Whether you're handling a small residential project or a large-scale industrial installation, we offer:
✅ Comprehensive product range - including AC90, ACWU90, Teck90, and custom armored cables.
⚙️ Full technical support - our expert team assists with selection, installation, and troubleshooting.
🧰 Professional service - pre-sales consultation and after-sales support to ensure your success.
🌍 Global shipping & certification - products meet CSA/UL standards, exported worldwide.
We believe that every connection counts, and we're here to make sure yours are strong, safe, and reliable.
📞 Contact us today to learn more or request a quote:
- Dongguan Greater Wire & Cable Co., Ltd.
- Tel/WhatsApp/WeChat: +86 135 1078 4550 / +86 136 6257 9592
- Email: manager01@greaterwire.com