Buyer's Guide
XLPE vs PVC Insulated Cable: Which One for Your Project?
Short answer: choose XLPE for power distribution, medium voltage, hot climates and any feeder where current capacity matters. Choose PVC for low-voltage building wiring and control circuits where flexibility and price come first.
Side-by-side comparison
| Property | XLPE | PVC |
|---|---|---|
| Max. conductor temperature (continuous) | 90 °C | 70 °C |
| Short-circuit temperature | 250 °C | 160 °C (≤300 mm²) |
| Current capacity, same cross-section | Higher (≈15–25%) | Baseline |
| Typical voltage range | 0.6/1 kV up to 35 kV and above | Mainly 0.6/1 kV and below |
| Dielectric losses | Low | Higher |
| Moisture & chemical resistance | Very good | Good |
| Flexibility & ease of installation | Stiffer | More flexible |
| Halogen-free option | Yes (XLPE + LSZH sheath) | No — PVC contains chlorine |
| Unit cost | Slightly higher | Lower |
| Typical standards | IEC 60502-1/-2, GB/T 12706 | IEC 60502-1, IEC 60227 |
Values are typical per IEC 60502. Always size cable to your local code and installation conditions.
A simple selection rule
- Above 1 kV, or buried / tray feeders above 35 mm² → XLPE.
- Ambient above 35 °C or grouped cables with heavy derating → XLPE.
- Metro, hospitals, data centres, tunnels → XLPE with LSZH sheath.
- Building wiring, sockets, lighting, control circuits → PVC is fine.
Frequently asked questions
Can I replace PVC cable with XLPE of the same size?
Yes. XLPE carries more current at the same cross-section, so a like-for-like swap gives extra thermal margin. You can sometimes downsize by one step — confirm with a voltage-drop and short-circuit check.
Is XLPE cable more expensive than PVC?
Per metre, slightly. But because XLPE can often use a smaller conductor for the same load, the installed cost of copper is frequently equal or lower on feeders above 35 mm².
Which is better for hot climates like Indonesia, Vietnam or the Middle East?
XLPE. Its 90 °C rating gives more headroom when ambient and ground temperatures are high, reducing derating losses.
When is PVC still the right choice?
Low-voltage building wiring, control cables and short final circuits where flexibility and low cost matter more than current capacity.
CTT products for each case
- YJV — XLPE copper power cable
- YJLV22 — XLPE armoured aluminium cable
- Medium & high voltage XLPE cable
- LSZH power cable
- PVC building wire
- KVV — PVC control cable
Not sure which to specify?
Send us your load, length and voltage. Our engineers reply with a recommended cable and quote, usually within 24 hours.