Today to buy the wire, the need to load is 3000W, do not know how to buy a thick wire, to sell the place where the wire, only to know what a square, two squares, do not know what the square refers to what? Is it inside the cross-sectional area of the wire? What is the unit? How much power do you need to calculate how much wire? Question added: Does the square mean cross-sectional area? If it is 2.5 square millimeters, then the wire diameter is how long? How to calculate this? How to know this wire is 2.5 square millimeters, you can use the ruler out of it? More
With linseed stuffing, and then no words with rubber stopper, but must be on the outside Caixing.
It shows that the design is unreasonable The correct approach is that there is a special cable wells in the best, however, the general construction unit is too expensive to save this may be bitter construction units continue to repair, it is difficult to cure here to introduce a few ways, According to the situation selected: . casing filled with dry cement, and with a wooden hammer tamping, but a certain idea of security, high pressure line once rammed the skin is too dangerous, should be done before power, you now estimated to have power, . outside the set of electric wells, the depth of the bottom of the casing in the 1 meter or so, and the wells do waterproof, wellhead should be hardened around, to avoid rain immersion, you seem to have done, but do not good enough, at the same time Into the built-in automatic suction pump, rain more than a certain depth of automatic drainage, is the price slightly higher; . in the cable casing surrounded by water swelling type of water, such as BW Zhishui, etc., but the effect in general.
On the patch panel down the need to pick up the switch to the optical module or fiber optic transceivers and then access the network router, the enterprise then take the general level of general business users on the line
