Current position > Product detail
『Calculation formula for current carrying capacity of copper wire』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
What is the formula for calculating the current carrying capacity of copper wire per square meter?
Given the power, calculate the current carrying value using the formula P=1.732UI × 0.8. The current carrying capacity is the maximum current that a conductor can continuously carry under specified conditions without causing its stable temperature to exceed the specified value.. Power calculation generally involves two types of loads (which can also be electrical appliances such as lamps, refrigerators, etc.): resistive loads and inductive loads. For resistive loads, the calculation formula is P=UI. For fluorescent lamp loads, the calculation formula is P=UIcos ф, where the power factor of the fluorescent lamp load is different and the power factor of the inductive load is different. When calculating household appliances uniformly, the power factor cos ф can be adjusted to 0.8. That is to say, if the total power of all household appliances is 6000 watts, the maximum current is I=P/Ucos ф=6000/220 * 0.8=34 (A). However, in general, household appliances cannot be used simultaneously, so a common factor is added, which is usually 0.5. So, the above calculation should be rewritten as I=P * number/Ucos ф=6000 * 0.5/220 * 0.8=17 (A), which means that the total current value of this household is 17A. Therefore, the main switch air switch cannot use 16A, and should use one greater than 17A. Part of the national standard allows for a long-term load current of 6A to 8A for 1 square copper core wi
1、 Comparison Table of Square and Current of Copper Wires 1. Safe Current Carrying Capacity of Square Copper Wires -17A1.5 Square Copper Wires -21A2.5 Square Copper Wires -28A4 Square Copper Wires -35A6 Square Copper Wires -48A10 Square Copper Wires -65A16 Square Copper Wires -91A25 Square Copper Wires -120A
2. Calculation Method for Square Load Power of Copper Wires
(1) Given that the cross-sectional area of a pure copper wire is S (mm2), the current density is generally taken as 6A/mm2, and the current carrying capacity of the wire is I (A)=S (mm2) 6A/mm2 For example, a 2.5 square meter wire has a current carrying capacity of I=2.5x6=15 (A). If it is a 220V voltage, the carrying power is P=220x15=3300 (W)
(2) You can also use an estimation formula to make a rough estimate: multiply 2.5 by 9, subtract 1 from the top and follow the order. Thirty five times three and a half, in pairs, subtract five points. Conditions are subject to change and conversion, with high temperature copper upgraded at a 10% discount. The number of pipes passing through is 2-34, with a full load flow of 876.