Common questions are about the voltage drop on wires. Nice but unsatisfactory advice to use for security reasons a thicker and hence moreĮxpensive cable.
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Also, it depends on the ambient temperature, the allowable current density, and theĪllowable voltage drop, and whether solid or litz wire is present. It depends on many circumstances, such as for example, if the calculation is for DC, AC orĮven for three-phase current, whether the cable is released freely, or is placed under the There is no exact formula for the minimum wire size from the maximum amperage. There are four factors that affect the resistance of a conductor:ġ) the cross sectional area of a conductor A, calculated from the diameter dĤ) the material constituting the conductor It need not necessarily have to be a circle.Ĭommercially available wire (cable) size as cross sectional area:Ġ.75 mm 2, 1.5 mm 2, 2.5 mm 2, 4 mm 2, 6 mm 2, 10 mm 2, 16 mm 2.Ĭalculation of the cross section A, entering the diameter d = 2 r:ĭ = 2 r = diameter of the wire or cable Historyhound 2 1 16 MmĬalculation of the diameter d = 2 r, entering the cross section A:
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The cross section or the cross sectional area is the area of such a cut.
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Litz wire (stranded wire) consisting of many thin wires need a 14 % larger diameter compared to a solid wire. Or centimeters, when you take for the area the square of that measure. The 'unit' is usually millimeters but it can also be inches, feet, yards, meters (metres), You will see the program but the function will not work. The used browser does not support JavaScript. (Three-phase (DS) / AC (WS))Ģ) Fuse - Upstream backup = Maximum permissible current (Amp)ģ) On schedule to be transmitted power (kVA)ĥ) Permissible voltage drop (% of the rated voltage)Ħ) Line material. The required cross-section of an electrical line depends on the following factors:ġ) Rated voltage. Resistance varies inversely with the cross-sectional area of a wire. Why is the diameter value greater than the area value? Because that's not the same. Round electric cable, conductor, wire, cord, string, wiring, and ropeĬross section is just a two-dimensional view of a slice through an object.Īn often asked question: How can you convert the diameter of a round wire d = 2 × r to theĬircle cross section surface or the cross-section area A (slice plane) to the cable diameter d ? Cable diameter to circle cross-sectional area and vice versa.Conversion and calculation − cross section diameter Display 2 Aspect 16 x 9 Widescreen 16 x 10 Widescreen 4 x 3 TV, iPad 3 x 2 Phone 5 x 3 Phone 2.35:1 Ultra Wide 21 x 9 Ultra Wide 5 x 4 Monitor 1 x 1 Square Other. It's a 'personal web search.' Just type in a few keywords and HistoryHound gives you a list of pages you've viewed recently, ranked by relevance.
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HistoryHound lets you do a fast keyword search on the entire content of all web pages and RSS feeds you've visited recently, plus all those that you've bookmarked. The leaves and flowering tops are used as flavouring for beverages and candies. Horehound is native to Europe, North Africa, and Central Asia and has naturalized throughout much of North and South America. Horehound, (Marrubium vulgare), bitter perennial herb of the mint family (Lamiaceae).