1. What is an R90 Cable?
R90 cable is also a single-conductor cable compliant with Canadian standards, but it's designed with greater emphasis on durability and environmental resistance.
Key Features of R90 Cable:
Insulation Material: Usually PVC or XLPE, depending on the manufacturer;
Temperature Rating: Rated up to 90°C, also suitable for dry environments;
Voltage Rating: Typically 600V;
Installation: Must be installed in conduit for added protection;
Mechanical Protection: High abrasion resistance, suitable for more complex wiring setups;
Flexibility: Slightly less flexible than T90, requires more careful handling during installation.
Common Applications:
Power supply to industrial equipment
Conduit-based wiring systems
Hidden wiring inside walls and ceilings
R90 cable offers higher protection and is ideal for demanding environments where durability and safety are paramount.
2. What is a T90 Cable?
T90 cable is a type of single-conductor electrical wire that complies with Canadian standards such as CSA C22.2. It is commonly used for internal power wiring in both residential and commercial buildings.
Key Features of T90 Cable:
Insulation Material: Typically uses XLPE (cross-linked polyethylene), which provides good thermal resistance;
Temperature Rating: Rated up to 90°C, suitable for dry environments;
Voltage Rating: Usually rated for 600V;
Installation: Can be installed in open air (exposed), making it easy to work with;
Flame Resistance: High, suitable for confined spaces.
Common Applications:
Indoor power distribution
Lighting circuits
Outlet and switch wiring
T90 cable is widely favored in home and light commercial projects for its cost-effectiveness and ease of installation.
3. Key Differences Between T90 and R90 Cables
| Aspect | T90 Cable | R90 Cable |
|---|---|---|
| Insulation | Typically XLPE | PVC or XLPE |
| Installation | Can be surface-mounted or exposed | Must be installed in conduit |
| Heat Rating | 90°C | 90°C |
| Flame Rating | High | Moderate to high (depending on type) |
| Flexibility | More flexible | Less flexible |
| Durability | Standard | High mechanical protection |
| Applications | Indoor residential wiring | Conduit-based or industrial systems |
| Cost | Lower | Slightly higher |
4. How to Choose the Right Cable?
When choosing between T90 and R90 cables, it's important to consider the environment, safety requirements, and installation conditions. Here's a practical selection guide for common use cases:
1. For Residential Wiring: Choose T90 Cable
In dry, indoor environments such as homes, condos, and light commercial spaces, T90 cable is a reliable and cost-effective choice:
Easy to install: Can be surface-mounted or installed in raceways;
Cost-effective: Ideal for large-scale wiring on a budget;
Fire-resistant: Meets safety standards for indoor residential use.
Ideal for: Outlet circuits, lighting, kitchen electrical runs, etc.
2. For Industrial or Commercial Use: Choose R90 Cable
In factories, office buildings, and environments with stricter electrical demands, R90 cable provides better performance:
Better protection: Designed for use in conduits, minimizing risk of damage;
Higher safety standards: Withstands wear, heat, and tough conditions;
Code-compliant: Often required by building regulations for concealed installations.
Ideal for: In-wall wiring, conduit runs, main branch circuits.
3. For Special Environments: Cable Selection Tips
For environments with unusual conditions, consider the following:
High-temperature zones: Use cables with a higher temperature rating (>90°C);
Damp or underground spaces: Choose waterproof cables like NMWU or other armored types;
Fire-prone areas: Opt for flame-retardant cables (e.g., FT6-rated);
Flexible installations: Use T90 for easier handling during complex layouts.
Dongguan Greater Wire & Cable Co., Ltd. has a complete international cable certification system. Our products have fully covered UL, CE, SAA, VDE, TÜV, IEC and ISO standards, and are widely used in engineering, power, transportation, new energy and other fields. Our technical team can provide customers with one-on-one certification consulting to assist you in dealing with various export and project bidding needs. Please feel free to contact us immediately.