电缆负载计算方法（Calculation method of cable load）.docVIP

电缆负载计算方法（Calculation method of cable load） 10 square mm copper power line of the safe carrying capacity 65A. . . 1 square mm copper power line of the safe carrying capacity 17A. 1.5 square mm copper power line of the safe carrying capacity 21A. 2.5 square mm copper power line of the safe carrying capacity 28A. 4 square mm copper power line of the safe carrying capacity 35A. 6 square mm copper power line of the safe carrying capacity 48A. 10 square mm copper power line of the safe carrying capacity 65A. 16 square mm copper power line of the safe carrying capacity 91A. 25 square mm copper power line of the safe carrying capacity 120A. Single-phase load per kW 4.5A (COS=1), calculated the election after the current of the wire. 10 square copper wire home safety standard is: if it is dark installed, take 5A/ square. Ming installed 7A/ square Then the 10 square copper wire is bright installed through the current of 70A, under the voltage of 220V, the power can be as follows: 15KW; Only 11KW is installed in the dark, which is due to the laying of the line in the wall, affecting the heat dissipation of the line A rough calculation method in engineering is 5 times the square of the number, but the more detailed the more allowed higher, remember to test electrical problems, different cable permissible current: 4 mm 36A, 6 mm, 10 mm 46A 64A, 16 mm 85A, 25 mm 113A, 35 mm 138A, 50 mm 173A, 70 mm 215A, Selection of cable cross section Select the section according to the current 1. uses The flow of various wires (safe electricity) is usually found in the manual. But the use of formulas with some simple arithmetic, can be calculated directly, without look-up table. Wire section and wire cutting flow, and wire material (aluminum or copper) and type (insulated wire or wire laying method, etc.) (surface or through pipe etc.) and ambient temperature (about 25 DEG C or greater) and so on, there are many factors affecting the complicated calculation. 2. formula Relationship between cros