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The conclusion is that in poor stable conductors, equivalent to undoped silicon, the skin effect doesn't must be taken into consideration in most practical conditions: Any present is equally distributed throughout the fabric's cross-section, regardless of its frequency. The amplitude and section of the current density varies with depth. At 60 Hz in copper, the skin depth is about 8.5 mm. This reduces the skin depth for iron to about 1/38 that of copper, about 220 micrometers at 60 Hz. At 1 megahertz the skin effect depth in wet soil is about 5.Zero m; in seawater it's about 0.25 m. A kind of cable called litz wire (from the German Litzendraht, braided wire) is used to mitigate the skin impact for frequencies of a few kilohertz to about one megahertz. What’s Your Skin Type? Litz wire is usually used within the windings of high-frequency transformers to extend their effectivity by mitigating both skin impact and proximity effect. Only non-magnetic rods can be utilized for prime-frequency welding. Iron rods work well for direct-present (DC) welding but it's unimaginable to make use of them at frequencies a lot increased than 60 Hz.