I am a company's buyers, because do not understand, especially to ask questions, please prawn is not a good answer! I have two strands on hand, and I suspect that they have not reached the square of what I want. . strand for the 20 shares, single strand core diameter is 0.18mm. (The other party is 0.75 square) . the stock is 27 shares, single strand core diameter is 0.12mm. (This unknown) How can the above two lines accurately calculate their square, please list the detailed calculation formula and calculation method! (Refused to copy from the Internet) more
That the original connection in the USB device line can not be changed, can not be extended.
First, the general principles of wire and cable selection In the selection of wire and cable, the general attention to wire and cable models, specifications (conductor cross-section) choice
The second floor of the formula is correct, my space also have this formula, with armor and no armor in the current no difference, there are differences in the installation, usually buried to armor, overhead or bridge without armor, you give the model is not Armor, YJV-4 * 240 without armor, YJV-22-4 * 240 armor,
