Learn How to Choose Proper Socket Extension Lead
When the device does not reach the outlet, a socket extension helps out. It will allow you to use the equipment at a distance of 1 to 10 meters or more to the nearest outlet. In this article, we will tell you by what criteria you need to look for a suitable socket extension lead, as well as some of the nuances of its use.
What parameters do you have to pay attention to?
The wire cross-section is selected based on the planned load: up to 6 A (1380 W) – not less than 0.75 mm², up to 10 A (2300 W) – not less than 1.00 mm², up to 16 A (3680 W) – not less than 1.5 mm².
That is if you need to connect a computer and a monitor, an extension cord with a cross-section of 0.75 mm² will do. But a wire with a cross-section of 1.5 mm² will not withstand a kettle and a 2.5-kW heater operating simultaneously. It is important not to stress the extension cord as this is a safety issue. Powerful devices must be connected one at a time or to an extension cord with a wire cross-section of more than 1.5 mm².
Number and type of sockets. The extension cord can have from one to 10 outlets. But this does not mean that 10 devices can be turned on at a time. A large number of sockets is needed so as not to use the same one all the time – from the constant pulling out of the plug, the socket breaks down faster.
Important. There are various adapters. But they significantly increase the contact resistance, reduce voltage and power, and also break grounding. We do not recommend using them for highly sensitive equipment, as well as devices that require mandatory grounding.
Also, pay attention to the location of the plug-in contacts of the sockets. After connecting, the plug should be located obliquely with respect to the extension cord.
Length of cable. Household products are usually between 3 and 7 meters long. The smaller the cross-section of the wire, the more it heats up. If the cable lies loosely on the floor, the heat is dissipated, and the wire does not overheat. But if powerful devices are connected to the extension cord, and it itself is rolled into a ball or on a bay, the wires will warm each other. Overheating is inevitable. That is, the wire lying around the room is safer than neatly coiled in a coil.
Fuses and filters. Surge protectors have additional elements: varistor: dissipates impulse noise. Filter choke: eliminates high-frequency interference. Contactor: protects against overvoltage.
Typically, most products only use a varistor. With a short-term voltage jump (about 300 V), its resistance drops sharply, and the current increases. More expensive products have multiple varistors as well as capacitors and inductors.
Inspect the wires regularly for cracks, discoloration, and kinks. The damaged product must be replaced. Always unwind the cable completely when connecting powerful appliances. Should wish to buy a socket extension lead just visit the Currys website.
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