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Power cords and power strips: a practical safety guide
Power cables and power strips may seem like simple accessories, but they are essential for the safety of computers, monitors, routers, printers, video surveillance systems, and office equipment.
Choosing the wrong cable, overloading a power strip, or daisy-chaining multiple extension cords can lead to overheating, short circuits, equipment damage, or electrical hazards. In this guide, we explain how to choose and use these products correctly.
View collection: power cables.
Quick Summary
- Choose the cable by connector type, gauge, power rating, and intended use.
- Not all power strips have surge protection.
- Avoid daisy-chaining power strips if possible.
- For computers and sensitive electronics, consider electrical protection or a UPS.
- Replace damaged, frayed, loose, or overheating cables.
Common Types of Power Cables
- Schuko to IEC C13: very common in PC power supplies, monitors, printers, and UPS.
- Europlug / IEC C7: used in chargers, radios, consoles, small equipment, and lightweight power supplies.
- IEC C5: known as “cloverleaf,” common in laptop chargers.
- Extension Cords: useful for extending power to another point, always respecting power ratings and safety.
- Grounded Cables: recommended or necessary for equipment that requires it.
How to Choose the Right Cable
1. Identify the Connector
Before buying, check the shape of the equipment's connector: IEC C13, C7, C5, Schuko, or other. Many errors come from confusing similar-looking connectors.
2. Check the Equipment's Power Rating
Powering a small lamp is not the same as powering a PC, UPS, rack, or professional equipment. The cable must be rated for the current it will carry.
3. Don't Abuse Length
A longer cable can be convenient, but it can also be more difficult to manage and, in demanding uses, increase losses or heating if not appropriate.
4. Consider Grounding
If the equipment uses grounding, do not remove it with inadequate adapters. It is an important part of electrical safety.
Power Strips: Basic, with Switch, and with Protection
A power strip allows multiple devices to be connected to a single outlet, but it should not be confused with "more available power." The maximum power is still limited by the power strip itself, the cable, the wall outlet, and the electrical circuit.
| Type | Recommended Use |
|---|---|
| Basic Power Strip | Low-power devices and general use |
| Power Strip with Switch | Easily turn off multiple devices |
| Power Strip with Protection | Computers, TVs, routers, sensitive electronics |
| UPS | Equipment that needs autonomy during power outages |
Dangerous Mistakes with Power Strips and Extension Cords
- Daisy-chaining power strips: increases the risk of overload and overheating.
- Connecting high-power equipment: heaters, ovens, or powerful appliances should not be plugged into simple power strips.
- Using damaged cables: if there are cuts, frayed areas, or loose connectors, replace it.
- Covering power strips or coiling cables in use: hinders heat dissipation.
- Ignoring burning smell or overheating: disconnect and check immediately.
Surge Protection and UPS
A power strip with surge protection helps protect equipment from electrical spikes. It does not replace a correct electrical installation, but it is recommended for sensitive electronics.
A UPS (Uninterruptible Power Supply) adds a battery that keeps equipment powered on during a power outage. It is especially useful for computers, small servers, routers, NAS, video surveillance recorders, or critical equipment.
Frequently Asked Questions
Can I plug a power strip into another power strip?
It is not recommended. If you need more outlets, use an appropriate power strip or install more outlets.
What cable does a PC power supply use?
Typically Schuko to IEC C13, although it is advisable to check the specific equipment.
Does a power strip with a switch protect against surges?
Not necessarily. It must specifically indicate surge protection.
When do I need a UPS?
When a power outage could cause data loss, network downtime, recorder shutdowns, or problems with critical equipment.
Conclusion
Power cables and power strips are not minor products: they directly affect the safety and reliability of your equipment. Choose the correct connectors, avoid overloads, and use electrical protection when working with sensitive electronics.
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