It is never recommended to plug one Extension Lead in to another, as this increases resistance and the risk of overheating and causing a fire. Surge protection pays off. Lightning strikes can cause overvoltages in power, telephone or antenna lines. Extension leads with surge protection can reduce voltage peaks so that the connected devices are not damaged. Avoid damage to your electrical appliances by using surge protection products! Wall mountable extension lead Extension leads can provide protection against various types of leakage currents. These can occur due to lightning strikes or overvoltages. The protection is limited to a certain amperage in each case. The higher the selected amperage, the higher the maximum surge protection offered by the extension lead. What are surges? Individually switchable extension leads enable electrical appliances to be switched on and off individually without interrupting the complete power supply of the other electrical appliances plugged in. Wireless extension leads We have worked out some examples of the appliances you can plug in to an Extension Lead in various commercial and domestic scenarios, without overloading.

Further questions about surge protection extension leadsare also answered in the brennenstuhl® world of themes. The 3-way brennenstuhl®Connect Ecolor WiFi extension lead has also been awarded the iF DESIGN AWARD 2020. There are various reasons why a surge protection product is worthwhile. The financial damage and annoyance is great afterwards when expensive electrical appliances such as televisions, computers or kitchen machines are damaged by lightning strikes and surges. To avoid these surges, a surge protector can reduce voltage peaks to a level that is not dangerous for the end device. How much surge protection is needed? Surges are all overvoltages that exceed the limit value of the mains voltage for a short time. Without effective surge protection, the overvoltages destroy sensitive electronic components in the circuits of the connected devices. What does surge protection mean for extension leads? The Desktop-Power extension lead is indispensable for every computer desk. Ideal for connecting a notebook, for example. Here you have USB connections in the form of a USB hub or USB charger within easy reach at the same time.A further word of warning: the maximum power handling of longer extension cables, such as cable reels designed for indoor or outdoor use, depends on the cable being completely unwound. If you’re planning on using high powered electric garden tools, then the cable must be unwound to prevent excessive heat build up in the cable reel. Where a wound cable reel might only handle 1,000 watts (1KW), the same reel may be rated at around 3,300 watts (3.3KW) when the cable is unwound to its full length. And similarly, don’t be tempted to tightly wind up a standard extension cable in the name of neatness if you’re going to be using it with power hungry appliances – items with a high power draw can cause the cable to heat up dramatically and create a fire hazard. Electrical Safety First has devised a calculator so you can estimate the power consumption of the appliances, devices or tools that you’re planning to connect to your extension lead. For general household use, you probably won’t need to worry too much as items like lamps or laptop or mobile phone chargers are very low in wattage, less than 100W in general, and even TVs and Hi-Fi components tend to draw hundreds rather than thousands of watts. That said, it pays to be vigilant: seemingly innocuous small household items such as hairdryers, irons and kettles can consume the best part of 3KW each – and if you’re thinking about electric lawnmowers and power tools, these too can demand kilowatts of power. When an extension lead is overloaded, it can heat up enormously.This can cause a "smouldering fire". A smouldering fire means that there are no visible flames at first. This makes it all the more dangerous because it is not easy to detect.Dust or other flammable materials can then cause a flame fire to start and spread until the surrounding area catches fire. Can extension leads be plugged in one after the other? There are many types of Extension Leads on the market, but there are some rules that every trader should follow when it comes to Extension Lead safety.

How long must the extension lead cable be? To ensure that the extension lead is long enough for every application, there are power strips with different cable lengths from 1.5m or 3m up to 5m. The maximum surge current for surge protection extension leads indicates how much current can be discharged without destroying the protective device. The higher the value, the more smaller overvoltage peaks the extension leads with surge protection can absorb without damaging connected devices. When do I need surge protection? brennenstuhl® offers extension leads for almost every application. From the common 3-way power strip to the sophisticated high-tech extension lead with surge protection, automatic function and other intelligent features, brennenstuhl® extension leads meet the most diverse requirements. brennenstuhl® power strips are available with illuminated on/off switch, increased touch protection, with USB charger, surge protection, main-follow function and many other features.Master-slave extension leads are also available from brennenstuhl® - brennenstuhl® designates the technology Main-Follow. Power strips with a USB charger offer the possibility of charging end devices such as smartphones, tablets, cameras and many more directly at the power strip with USB charger. In general, you must not plug in several extension leads one after the other. This is even indicated on the extension lead with a warning "do not plug in one after the other". The reason for this is the increased risk of overloading the extension lead. Charging devices even faster is possible with the technology for fast charging: Power Delivery. With Power Delivery, various battery-powered devices can be safely charged within a short time via a USB C connection, regardless of the manufacturer. With the Power Delivery technology for fast charging of batteries, connected end devices such as laptops, smartphones or tablets are charged up to 70% faster. Can I charge my USB device with Power Delivery? The most dangerous causes are very high voltage peaks triggered by indirect lightning. Power surges also enter the power grid through indirect lightning in enormous current strengths or reach computer systems, video and hi-fi equipment via the telephone and antenna lines and destroy these devices without appropriate protection. If you want to protect your electrical devices from damage or destruction by high voltage peaks, it is better to connect them to an extension lead with surge protection.