You might have heard about power cords called C13 and C15, especially when setting up computers, servers, or networking gear. They look quite similar but are designed for different uses. Maybe you’re wondering, “Can I just use a C15 instead of a C13?” This blog will answer that question simply, so anyone—even a 12-year-old—can understand.

What Are C13 and C15 Power Cords?

Both C13 and C15 are types of IEC 320 power cords. The IEC 320 standard defines the shapes, sizes, and electrical ratings for power cables used all over the world to safely connect devices to power sources.

• The C13 power cord is very common and used for everyday devices like desktop computers, monitors, and printers.

• The C15 power cord looks similar but is built to handle higher temperatures. It powers devices like servers or appliances that get hot, such as electric kettles or network switches in server rooms.

The Exact Answer: Can You Use C15 Instead of C13?

Yes, you can use a C15 power cord in place of a C13 power cord in most cases because it has a higher temperature rating and is built for tougher conditions. However, the opposite is not true: you should never substitute a C13 for a C15, especially on devices that require the higher heat tolerance of a C15 cable.

The C15 has a special notch that allows it to fit C16 inlets designed for high-heat machines, while the C13 fits standard C14 inlets. Physically, the C15 can also plug into C14 devices, making it a safe upgrade or replacement for most standard applications.

Key Differences Between C13 and C15 Power Cords

1. Temperature Rating

• C13 cables: Designed to handle temperatures up to 65°C (149°F).

• C15 cables: Can handle much higher temperatures, up to 120°C (248°F).

This difference means C15 cables are made for high-temperature environments, like servers or lab equipment that heats up.

2. Connector Design

The C15 connector has a small notch or groove near the grounding pin. This prevents it from fitting into lower-rated C14 inlets but lets it fit safely into C16 high-temperature devices.

Interestingly, a C15 cable can fit into devices with C14 inlets because the notch doesn’t block it, whereas a C13 cable won’t fit into C16 inlets because it lacks this feature.

3. Application Use

• C13: Ideal for everyday home and office electronics.

• C15: Used in data centers, lab equipment, and appliances with higher heat output.

Why Is It Usually Safe to Use C15 Instead of C13?

The C15 power cord is made of materials that can withstand more heat without melting or failing. Using it in place of a C13 cable means you’re opting for a more durable and heat-resistant cable than what your device actually needs.

This is safe because the cable easily meets or exceeds the power and temperature needs of devices designed for a C13 cord.

When Should You NOT Use C15 Instead of C13?

• If your device’s inlet is specifically designed for a C13 and has tight space constraints, the C15's notch might cause fitting trouble in rare cases.

• If the power equipment explicitly requires C13 cables, always consult the manual or manufacturer to avoid warranty or safety issues.

However, in most common setups, especially with computers and monitors, a C15 cable is a reliable and safe substitute.

How to Recognize C13 and C15 Cables?

• Look for the notch: If the connector has a small groove near the ground pin, it’s a C15.

• Check labels: Most quality cables have printed specs or codes like “C13” or “C15” on the connector or cable jacket.

• Rating info: C15 cables carry markings showing their higher temperature tolerance.

Benefits of Choosing C15 Over C13

• More heat resistance means safer connections in hot environments.

• Greater durability over time, especially in busy server rooms or industrial settings.

• Compatible with both C14 and C16 inlets, making C15 more versatile.

Summary Table: C13 vs C15 Power Cord

Final Thoughts

So, can you use a C15 power cord instead of a C13? The simple answer is yes, and it’s often a good idea because C15 cables offer better heat resistance and durability while still being compatible in most cases.

If you want a safer and tougher power cord, especially for devices that might run warm or in server rooms, choose C15. But remember, always check your device’s requirements first. Using the right IEC 320 power cord keeps your electronics safe, reliable, and powered smoothly.

Whether it’s a C13 or C15 power cable, these little cables quietly power your devices every day—making sure your computers, monitors, and servers run without a hiccup.

Sources: https://skytechgeek.com/2025/07/iec-power-cable-types/

https://www.florevit.com/read-blog/42922