Spectrum
Spectrum Smart WiFi Plug 1 Power Meter, 230V, WiFi, Google Home Compatible, Alexa Compatible
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IP20
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White
21,95
Extension Cords
An extension cord is the ideal solution when you want to use electrical devices where there is no power outlet nearby. This handy installation material connects a power source to your device, providing placement flexibility. Whether you are working in the garden, in a workshop, or temporarily relocating equipment indoors, an extension cord is functional for both home and professional use.
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Types of Extension Cords: Safety and Application
Extension cords come in various types, tailored to the specific requirements of the location and the type of device being connected. The main differences are in the grounding method and their suitability for indoor or outdoor use.
Grounding of Extension Cords
- Extension cords with grounding: These cords feature a plug and matching socket with earth connection, recognizable by the metal contacts on the sides. They ensure safe discharge of excess current, mandatory for grounded devices and standard in most modern electrical installations.
- Extension cords without earth (Europlug): These cords have a flat plug and are suitable for double-insulated devices, for which grounding is not necessary. They are generally not suitable for devices with higher power consumption.
Suitability for Indoor and Outdoor Use (IP Rating)
The environment in which an extension cord will be used determines the required level of protection. The IP rating (Ingress Protection) indicates how resistant the cord is to dust and water.
| IP Rating | Protection Level | Suitable For |
|---|---|---|
| IP20 | Protected only from solid objects (no water protection) | Dry indoor areas |
| IP44 | Splash-proof, protected against solid objects larger than 1 mm | Sheltered outdoor areas (e.g., under a canopy), damp indoor spaces |
| IP54 / IP55 | Splash-proof and dust-tight | General outdoor use, garages, workshops |
| IP65 | Jet-proof and completely dust-tight | Exposed outdoor locations (e.g., building facades), harsh weather conditions |
| IP67 / IP68 | Completely submersible and dust-tight | Ground spots, pond lighting, underwater applications |
Materials such as neoprene or rubber are often used for outdoor extension cords, as they provide extra resistance to UV radiation, oils, and fluctuating temperatures.
Choosing Power Capacity and Length
The cross-section of the conductors in an extension cord determines how much current the cord can safely handle. This is important when connecting various devices.
Conductor Thickness and Maximum Load
Every extension cord has a maximum current load it can safely handle. This capacity is expressed in amperes (A) and wattage (W) and depends on the cross-section of the copper wires inside the cable.
| Conductor Cross-section | Max. Current (Ampere) | Max. Power (Watt at 230V) | Suitable For |
|---|---|---|---|
| 3 x 0.75 mm² | 6 A | 1380 W | Light devices: radio, lamps, phones |
| 3 x 1.0 mm² | 10 A | 2300 W | Medium-duty devices: vacuum cleaner, kettle, power tools |
| 3 x 1.5 mm² | 16 A | 3680 W | Heavier household devices: deep fryer, circular saw, lawn mower |
| 3 x 2.5 mm² | 25 A | 5750 W | Heavy-duty tools, construction lights, powerful machines |
It is important to check the wattage or amperage of the device being connected and make sure the extension cord can handle this load. Wires that are not thick enough can lead to voltage drop and overheating of the cord.
Length of the Extension Cord
Extension cords are available in various lengths, ranging from a few meters to fifty meters or more. Choose a length suitable for the distance that needs to be bridged, but avoid using a longer cord than strictly necessary. With long cords and high power loads, noticeable voltage drops may occur.
Safe Use of Extension Cords and Cable Reels
Proper handling of extension cords and cable reels minimizes risk and extends the life of the equipment.
- Fully unwind cable reels: When connecting high-power devices, always fully unwind the cable reel. A coiled cable cannot dissipate heat well, which can cause overheating and dangerous situations.
- Avoid overloading: Do not connect too many devices, especially high-power devices, to a single extension cord or reel at the same time. This can overload the electrical installation.
- Protect from external influences: Make sure cords used outdoors are suitable for those conditions. Keep plug connections dry, if necessary using a special cover. Prevent physical damage by avoiding bending, crushing, or driving over the cord.
- Unplug by pulling the plug: Disconnect a cord by gripping the plug, not by pulling the cable itself. This prevents damage to the wiring and connections.
Extension Cord versus Cable Reel: A Comparison
While both tools provide power at a distance, there are functional differences between a loose extension cord and a cable reel.
| Characteristic | Extension Cord | Cable Reel |
|---|---|---|
| Primary function | Extends one power point to one or a few matching sockets | Provides a retractable, longer cable with multiple outlets |
| Available lengths | Short to medium cables (e.g., 1.5 to 10 meters) | Often longer cables (e.g., 10 to 50+ meters) |
| Storage method | Easy to coil or store without a mechanism | Integrated winding mechanism for organized storage and transport |
| Number of outlets | Usually one, sometimes two or three | Often multiple outlets (usually 3 or 4) on the reel |
| Ease of use | Quick to deploy for simple extension | Requires full unwinding for high loads; organizes long cables |
| Typical use | Occasional use at home, in the office, for light tasks | Frequent use on construction sites, in the garden, garages, events |
| Extra features | Basic design | Sometimes with thermal protection, reset button, child safety |